Finding the Fourth Proportional to 782,229.68, 1,079,387.72 and 438,017.75
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Solution
The fourth proportional to 782,229.68, 1,079,387.72 and 438,017.75 is: 604,414.52
Step by Step Solution
- Step 1: Write the proportion equation
782,229.68 : 1,079,387.72 = 438,017.75 : x - Step 2: Convert to fraction form
782,229.68/1,079,387.72 = 438,017.75/x - Step 3: Cross multiply
782,229.68x = 1,079,387.72 × 438,017.75 - Step 4: Simplify right side
782,229.68x = 472,790,972,905.00 - Step 5: Solve for x
x = 472,790,972,905.00/782,229.68 - Step 6: Final answer
x = 604,414.52
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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.