Finding the Third Proportional to 420,997.50 and 641,201.06
Calculator
Solution
The third proportional to 420,997.50 and 641,201.06 is: 976,582.53
Step by Step Solution
- Step 1: Write the proportion equation
420,997.50 : 641,201.06 = 641,201.06 : x - Step 2: Convert to fraction form
420,997.50/641,201.06 = 641,201.06/x - Step 3: Cross multiply
420,997.50x = 641,201.06 × 641,201.06 - Step 4: Simplify right side
420,997.50x = 411,138,802,551.13 - Step 5: Solve for x
x = 411,138,802,551.13/420,997.50 - Step 6: Final answer
x = 976,582.53
Related Problems
Find third proportional to 210,498.75 and 320,600.53
Half scale
Find third proportional to 841,995 and 1,282,402.13
Double scale
Find third proportional to 421,000 and 641,204
Similar ratio
Find third proportional to 631,496.25 and 961,801.59
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.