Home / 861,276.60-1,292,204.67-381,437.86

Finding the Fourth Proportional to 861,276.60, 1,292,204.67 and 381,437.86

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Solution

The fourth proportional to 861,276.60, 1,292,204.67 and 381,437.86 is: 572,285.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,276.60 : 1,292,204.67 = 381,437.86 : x
  2. Step 2: Convert to fraction form
    861,276.60/1,292,204.67 = 381,437.86/x
  3. Step 3: Cross multiply
    861,276.60x = 1,292,204.67 × 381,437.86
  4. Step 4: Simplify right side
    861,276.60x = 492,895,784,006.81
  5. Step 5: Solve for x
    x = 492,895,784,006.81/861,276.60
  6. Step 6: Final answer
    x = 572,285.12

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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.