Finding the Fourth Proportional to 642,607.97, 886,785.37 and 356,125.55
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Solution
The fourth proportional to 642,607.97, 886,785.37 and 356,125.55 is: 491,445.70
Step by Step Solution
- Step 1: Write the proportion equation
642,607.97 : 886,785.37 = 356,125.55 : x - Step 2: Convert to fraction form
642,607.97/886,785.37 = 356,125.55/x - Step 3: Cross multiply
642,607.97x = 886,785.37 × 356,125.55 - Step 4: Simplify right side
642,607.97x = 315,806,922,298.96 - Step 5: Solve for x
x = 315,806,922,298.96/642,607.97 - Step 6: Final answer
x = 491,445.70
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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.