Finding the Fourth Proportional to 715,466.68, 987,324.12 and 393,176.68
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Solution
The fourth proportional to 715,466.68, 987,324.12 and 393,176.68 is: 542,572.88
Step by Step Solution
- Step 1: Write the proportion equation
715,466.68 : 987,324.12 = 393,176.68 : x - Step 2: Convert to fraction form
715,466.68/987,324.12 = 393,176.68/x - Step 3: Cross multiply
715,466.68x = 987,324.12 × 393,176.68 - Step 4: Simplify right side
715,466.68x = 388,192,819,585.52 - Step 5: Solve for x
x = 388,192,819,585.52/715,466.68 - Step 6: Final answer
x = 542,572.88
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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.