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Finding the Fourth Proportional to 634,013.26, 875,027.80 and 392,373.66

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Solution

The fourth proportional to 634,013.26, 875,027.80 and 392,373.66 is: 541,531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,013.26 : 875,027.80 = 392,373.66 : x
  2. Step 2: Convert to fraction form
    634,013.26/875,027.80 = 392,373.66/x
  3. Step 3: Cross multiply
    634,013.26x = 875,027.80 × 392,373.66
  4. Step 4: Simplify right side
    634,013.26x = 343,337,860,487.75
  5. Step 5: Solve for x
    x = 343,337,860,487.75/634,013.26
  6. Step 6: Final answer
    x = 541,531.04

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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.