Finding the Fourth Proportional to 715,661.68, 987,592.80 and 393,371.68
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Solution
The fourth proportional to 715,661.68, 987,592.80 and 393,371.68 is: 542,841.75
Step by Step Solution
- Step 1: Write the proportion equation
715,661.68 : 987,592.80 = 393,371.68 : x - Step 2: Convert to fraction form
715,661.68/987,592.80 = 393,371.68/x - Step 3: Cross multiply
715,661.68x = 987,592.80 × 393,371.68 - Step 4: Simplify right side
715,661.68x = 388,491,038,891.90 - Step 5: Solve for x
x = 388,491,038,891.90/715,661.68 - Step 6: Final answer
x = 542,841.75
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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.