Finding the Fourth Proportional to 393,691.80, 590,537.70 and 314,959.80
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Solution
The fourth proportional to 393,691.80, 590,537.70 and 314,959.80 is: 472,439.70
Step by Step Solution
- Step 1: Write the proportion equation
393,691.80 : 590,537.70 = 314,959.80 : x - Step 2: Convert to fraction form
393,691.80/590,537.70 = 314,959.80/x - Step 3: Cross multiply
393,691.80x = 590,537.70 × 314,959.80 - Step 4: Simplify right side
393,691.80x = 185,995,635,884.46 - Step 5: Solve for x
x = 185,995,635,884.46/393,691.80 - Step 6: Final answer
x = 472,439.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.