Home / 861,429.72-1,292,432.30-381,592.32

Finding the Fourth Proportional to 861,429.72, 1,292,432.30 and 381,592.32

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Solution

The fourth proportional to 861,429.72, 1,292,432.30 and 381,592.32 is: 572,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,429.72 : 1,292,432.30 = 381,592.32 : x
  2. Step 2: Convert to fraction form
    861,429.72/1,292,432.30 = 381,592.32/x
  3. Step 3: Cross multiply
    861,429.72x = 1,292,432.30 × 381,592.32
  4. Step 4: Simplify right side
    861,429.72x = 493,182,239,799.94
  5. Step 5: Solve for x
    x = 493,182,239,799.94/861,429.72
  6. Step 6: Final answer
    x = 572,515.93

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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.