Finding the Fourth Proportional to 715,240.99, 987,049.97 and 392,971.96
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Solution
The fourth proportional to 715,240.99, 987,049.97 and 392,971.96 is: 542,310.87
Step by Step Solution
- Step 1: Write the proportion equation
715,240.99 : 987,049.97 = 392,971.96 : x - Step 2: Convert to fraction form
715,240.99/987,049.97 = 392,971.96/x - Step 3: Cross multiply
715,240.99x = 987,049.97 × 392,971.96 - Step 4: Simplify right side
715,240.99x = 387,882,961,328.84 - Step 5: Solve for x
x = 387,882,961,328.84/715,240.99 - Step 6: Final answer
x = 542,310.87
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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.