Home / 861,386.61-1,292,372.12-381,549.90

Finding the Fourth Proportional to 861,386.61, 1,292,372.12 and 381,549.90

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Solution

The fourth proportional to 861,386.61, 1,292,372.12 and 381,549.90 is: 572,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,386.61 : 1,292,372.12 = 381,549.90 : x
  2. Step 2: Convert to fraction form
    861,386.61/1,292,372.12 = 381,549.90/x
  3. Step 3: Cross multiply
    861,386.61x = 1,292,372.12 × 381,549.90
  4. Step 4: Simplify right side
    861,386.61x = 493,104,453,148.79
  5. Step 5: Solve for x
    x = 493,104,453,148.79/861,386.61
  6. Step 6: Final answer
    x = 572,454.28

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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.