Home / 861,273.60-1,292,200.17-381,434.86

Finding the Fourth Proportional to 861,273.60, 1,292,200.17 and 381,434.86

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Solution

The fourth proportional to 861,273.60, 1,292,200.17 and 381,434.86 is: 572,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,273.60 : 1,292,200.17 = 381,434.86 : x
  2. Step 2: Convert to fraction form
    861,273.60/1,292,200.17 = 381,434.86/x
  3. Step 3: Cross multiply
    861,273.60x = 1,292,200.17 × 381,434.86
  4. Step 4: Simplify right side
    861,273.60x = 492,890,190,935.93
  5. Step 5: Solve for x
    x = 492,890,190,935.93/861,273.60
  6. Step 6: Final answer
    x = 572,280.62

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1.5x scale

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.