Finding the Fourth Proportional to 1,098,609.12, 1,647,901.37 and 388,471.09
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Solution
The fourth proportional to 1,098,609.12, 1,647,901.37 and 388,471.09 is: 582,702.27
Step by Step Solution
- Step 1: Write the proportion equation
1,098,609.12 : 1,647,901.37 = 388,471.09 : x - Step 2: Convert to fraction form
1,098,609.12/1,647,901.37 = 388,471.09/x - Step 3: Cross multiply
1,098,609.12x = 1,647,901.37 × 388,471.09 - Step 4: Simplify right side
1,098,609.12x = 640,162,031,234.53 - Step 5: Solve for x
x = 640,162,031,234.53/1,098,609.12 - Step 6: Final answer
x = 582,702.27
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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.