Home / 861,385.61-1,292,370.62-381,548.90

Finding the Fourth Proportional to 861,385.61, 1,292,370.62 and 381,548.90

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Solution

The fourth proportional to 861,385.61, 1,292,370.62 and 381,548.90 is: 572,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,385.61 : 1,292,370.62 = 381,548.90 : x
  2. Step 2: Convert to fraction form
    861,385.61/1,292,370.62 = 381,548.90/x
  3. Step 3: Cross multiply
    861,385.61x = 1,292,370.62 × 381,548.90
  4. Step 4: Simplify right side
    861,385.61x = 493,102,580,083.72
  5. Step 5: Solve for x
    x = 493,102,580,083.72/861,385.61
  6. Step 6: Final answer
    x = 572,452.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.