Finding the Fourth Proportional to 642,695.13, 886,903.92 and 356,209.08
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Solution
The fourth proportional to 642,695.13, 886,903.92 and 356,209.08 is: 491,560.02
Step by Step Solution
- Step 1: Write the proportion equation
642,695.13 : 886,903.92 = 356,209.08 : x - Step 2: Convert to fraction form
642,695.13/886,903.92 = 356,209.08/x - Step 3: Cross multiply
642,695.13x = 886,903.92 × 356,209.08 - Step 4: Simplify right side
642,695.13x = 315,923,229,391.59 - Step 5: Solve for x
x = 315,923,229,391.59/642,695.13 - Step 6: Final answer
x = 491,560.02
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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.