Finding the Fourth Proportional to 715,014.26, 986,727.80 and 392,731.91
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Solution
The fourth proportional to 715,014.26, 986,727.80 and 392,731.91 is: 541,974.49
Step by Step Solution
- Step 1: Write the proportion equation
715,014.26 : 986,727.80 = 392,731.91 : x - Step 2: Convert to fraction form
715,014.26/986,727.80 = 392,731.91/x - Step 3: Cross multiply
715,014.26x = 986,727.80 × 392,731.91 - Step 4: Simplify right side
715,014.26x = 387,519,491,580.44 - Step 5: Solve for x
x = 387,519,491,580.44/715,014.26 - Step 6: Final answer
x = 541,974.49
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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.