Finding the Third Proportional to 311,428 and 681,016
Calculator
Solution
The third proportional to 311,428 and 681,016 is: 1,489,213.53
Step by Step Solution
- Step 1: Write the proportion equation
311,428 : 681,016 = 681,016 : x - Step 2: Convert to fraction form
311,428/681,016 = 681,016/x - Step 3: Cross multiply
311,428x = 681,016 × 681,016 - Step 4: Simplify right side
311,428x = 463,782,792,256 - Step 5: Solve for x
x = 463,782,792,256/311,428 - Step 6: Final answer
x = 1,489,213.53
Related Problems
Find third proportional to 155,714 and 340,508
Half scale
Find third proportional to 622,856 and 1,362,032
Double scale
Find third proportional to 311,430 and 681,020
Similar ratio
Find third proportional to 467,142 and 1,021,524
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.