Finding the Fourth Proportional to 931,491.28, 1,397,236.74 and 398,666.80
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Solution
The fourth proportional to 931,491.28, 1,397,236.74 and 398,666.80 is: 598,000.12
Step by Step Solution
- Step 1: Write the proportion equation
931,491.28 : 1,397,236.74 = 398,666.80 : x - Step 2: Convert to fraction form
931,491.28/1,397,236.74 = 398,666.80/x - Step 3: Cross multiply
931,491.28x = 1,397,236.74 × 398,666.80 - Step 4: Simplify right side
931,491.28x = 557,031,899,978.23 - Step 5: Solve for x
x = 557,031,899,978.23/931,491.28 - Step 6: Final answer
x = 598,000.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.