Finding the Fourth Proportional to 642,640.62, 886,641.42 and 370,672.05
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Solution
The fourth proportional to 642,640.62, 886,641.42 and 370,672.05 is: 511,410.55
Step by Step Solution
- Step 1: Write the proportion equation
642,640.62 : 886,641.42 = 370,672.05 : x - Step 2: Convert to fraction form
642,640.62/886,641.42 = 370,672.05/x - Step 3: Cross multiply
642,640.62x = 886,641.42 × 370,672.05 - Step 4: Simplify right side
642,640.62x = 328,653,192,766.31 - Step 5: Solve for x
x = 328,653,192,766.31/642,640.62 - Step 6: Final answer
x = 511,410.55
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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.