Finding the Fourth Proportional to 715,463.68, 987,319.98 and 393,173.68
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Solution
The fourth proportional to 715,463.68, 987,319.98 and 393,173.68 is: 542,568.74
Step by Step Solution
- Step 1: Write the proportion equation
715,463.68 : 987,319.98 = 393,173.68 : x - Step 2: Convert to fraction form
715,463.68/987,319.98 = 393,173.68/x - Step 3: Cross multiply
715,463.68x = 987,319.98 × 393,173.68 - Step 4: Simplify right side
715,463.68x = 388,188,229,874.13 - Step 5: Solve for x
x = 388,188,229,874.13/715,463.68 - Step 6: Final answer
x = 542,568.74
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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.