Present Population given Future Population at End of n Decades by Arithmetic Increase Method Calculator

✖Forecasted Population is the population forested usually after n decade or after n years.ⓘ Forecasted Population [P_n]			+10% -10%
✖Number of Decades is the year gap of 10 years. Usually, 10 years is equal to 1 decade.ⓘ Number of Decades [n]			+10% -10%
✖Average Arithmetic Increase in population is the arithmetic sum of the population increase of the previous decade.ⓘ Average Arithmetic Increase [X̄]			+10% -10%

✖Last Known Population is the population of any area of the previous year or decade.ⓘ Present Population given Future Population at End of n Decades by Arithmetic Increase Method [P_o]

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Present Population given Future Population at End of n Decades by Arithmetic Increase Method Solution

STEP 0: Pre-Calculation Summary

Formula Used

Last Known Population = Forecasted Population-Number of Decades*Average Arithmetic Increase
P_o = P_n-n*X̄
This formula uses 4 Variables

Variables Used

Last Known Population - Last Known Population is the population of any area of the previous year or decade.
Forecasted Population - Forecasted Population is the population forested usually after n decade or after n years.
Number of Decades - Number of Decades is the year gap of 10 years. Usually, 10 years is equal to 1 decade.
Average Arithmetic Increase - Average Arithmetic Increase in population is the arithmetic sum of the population increase of the previous decade.

STEP 1: Convert Input(s) to Base Unit

Forecasted Population: 350000 --> No Conversion Required
Number of Decades: 2 --> No Conversion Required
Average Arithmetic Increase: 37500 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_o = P_n-n*X̄ --> 350000-2*37500

Evaluating ... ...

P_o = 275000

STEP 3: Convert Result to Output's Unit

275000 --> No Conversion Required

FINAL ANSWER

275000 <-- Last Known Population

(Calculation completed in 00.006 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< Arithmetic Increase Method Calculators

Average Increment for n Decade given Future Population by Arithmetic Increase Method

LaTeX Go Average Arithmetic Increase = (Forecasted Population-Last Known Population)/Number of Decades

Number of Decades given Future Population by Arithmetic Increase Method

LaTeX Go Number of Decades = (Forecasted Population-Last Known Population)/Average Arithmetic Increase

Future Population at End of n Decades by Arithmetic Increase Method

LaTeX Go Forecasted Population = Last Known Population+Number of Decades*Average Arithmetic Increase

Future Population at End of 2 Decades by Arithmetic Increase Method

LaTeX Go Forecasted Population = Last Known Population+2*Average Arithmetic Increase

Present Population given Future Population at End of n Decades by Arithmetic Increase Method Formula

LaTeX Go

Last Known Population = Forecasted Population-Number of Decades*Average Arithmetic Increase
P_o = P_n-n*X̄

What is Population Forecasting and Methods Involved?

Population forecasting is defined as the method of determining the expected population for a particular design period of a water supply system with the help of the study and analysis of future events and available records.
Methods are
1. Arithmetic Increase Method
2. Geometric Increase Method
3. Incremental Increase Method
4. Decrease Growth Rate Method
5. Logistic Curve Method
6. Demographic Method
7. Simple Graphical Method
8. Comparative Graphical Method
9. Master Plan Method
10. Ratio Method

Assumptions in Arithmetic Increase Method

1. The population increases at a constant rate i.e., the rate of change of population with time (dp/dt) is constant.
2. It is applicable to old and large cities.
3. This method yields lower results for rapidly growing cities.

How to Calculate Present Population given Future Population at End of n Decades by Arithmetic Increase Method?

Present Population given Future Population at End of n Decades by Arithmetic Increase Method calculator uses Last Known Population = Forecasted Population-Number of Decades*Average Arithmetic Increase to calculate the Last Known Population, The Present Population given Future Population at End of n Decades by Arithmetic Increase Method formula is defined as the value of the present population when we have prior information of other parameters used. Last Known Population is denoted by P_o symbol.

How to calculate Present Population given Future Population at End of n Decades by Arithmetic Increase Method using this online calculator? To use this online calculator for Present Population given Future Population at End of n Decades by Arithmetic Increase Method, enter Forecasted Population (P_n), Number of Decades (n) & Average Arithmetic Increase (X̄) and hit the calculate button. Here is how the Present Population given Future Population at End of n Decades by Arithmetic Increase Method calculation can be explained with given input values -> 275000 = 350000-2*37500.

FAQ

What is Present Population given Future Population at End of n Decades by Arithmetic Increase Method?

The Present Population given Future Population at End of n Decades by Arithmetic Increase Method formula is defined as the value of the present population when we have prior information of other parameters used and is represented as P_o = P_n-n*X̄ or Last Known Population = Forecasted Population-Number of Decades*Average Arithmetic Increase. Forecasted Population is the population forested usually after n decade or after n years, Number of Decades is the year gap of 10 years. Usually, 10 years is equal to 1 decade & Average Arithmetic Increase in population is the arithmetic sum of the population increase of the previous decade.

How to calculate Present Population given Future Population at End of n Decades by Arithmetic Increase Method?

The Present Population given Future Population at End of n Decades by Arithmetic Increase Method formula is defined as the value of the present population when we have prior information of other parameters used is calculated using Last Known Population = Forecasted Population-Number of Decades*Average Arithmetic Increase. To calculate Present Population given Future Population at End of n Decades by Arithmetic Increase Method, you need Forecasted Population (P_n), Number of Decades (n) & Average Arithmetic Increase (X̄). With our tool, you need to enter the respective value for Forecasted Population, Number of Decades & Average Arithmetic Increase and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Last Known Population?

In this formula, Last Known Population uses Forecasted Population, Number of Decades & Average Arithmetic Increase. We can use 2 other way(s) to calculate the same, which is/are as follows -

Last Known Population = Forecasted Population-2*Average Arithmetic Increase
Last Known Population = Forecasted Population-3*Average Arithmetic Increase

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