Finding the Fourth Proportional to 715,701.09, 987,669.56 and 409,782.17
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Solution
The fourth proportional to 715,701.09, 987,669.56 and 409,782.17 is: 565,500.56
Step by Step Solution
- Step 1: Write the proportion equation
715,701.09 : 987,669.56 = 409,782.17 : x - Step 2: Convert to fraction form
715,701.09/987,669.56 = 409,782.17/x - Step 3: Cross multiply
715,701.09x = 987,669.56 × 409,782.17 - Step 4: Simplify right side
715,701.09x = 404,729,372,325.22 - Step 5: Solve for x
x = 404,729,372,325.22/715,701.09 - Step 6: Final answer
x = 565,500.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.