Finding the Third Proportional to 310,717.50 and 680,740.50
Calculator
Solution
The third proportional to 310,717.50 and 680,740.50 is: 1,491,411.42
Step by Step Solution
- Step 1: Write the proportion equation
310,717.50 : 680,740.50 = 680,740.50 : x - Step 2: Convert to fraction form
310,717.50/680,740.50 = 680,740.50/x - Step 3: Cross multiply
310,717.50x = 680,740.50 × 680,740.50 - Step 4: Simplify right side
310,717.50x = 463,407,628,340.25 - Step 5: Solve for x
x = 463,407,628,340.25/310,717.50 - Step 6: Final answer
x = 1,491,411.42
Related Problems
Find third proportional to 155,358.75 and 340,370.25
Half scale
Find third proportional to 621,435 and 1,361,481
Double scale
Find third proportional to 310,720 and 680,745
Similar ratio
Find third proportional to 466,076.25 and 1,021,110.75
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.