Finding the Fourth Proportional to 715,668.97, 987,609.88 and 393,372.17
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Solution
The fourth proportional to 715,668.97, 987,609.88 and 393,372.17 is: 542,846.28
Step by Step Solution
- Step 1: Write the proportion equation
715,668.97 : 987,609.88 = 393,372.17 : x - Step 2: Convert to fraction form
715,668.97/987,609.88 = 393,372.17/x - Step 3: Cross multiply
715,668.97x = 987,609.88 × 393,372.17 - Step 4: Simplify right side
715,668.97x = 388,498,241,609.04 - Step 5: Solve for x
x = 388,498,241,609.04/715,668.97 - Step 6: Final answer
x = 542,846.28
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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.