Home / 861,772.72-1,292,059.48-381,739.92

Finding the Fourth Proportional to 861,772.72, 1,292,059.48 and 381,739.92

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Solution

The fourth proportional to 861,772.72, 1,292,059.48 and 381,739.92 is: 572,344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,772.72 : 1,292,059.48 = 381,739.92 : x
  2. Step 2: Convert to fraction form
    861,772.72/1,292,059.48 = 381,739.92/x
  3. Step 3: Cross multiply
    861,772.72x = 1,292,059.48 × 381,739.92
  4. Step 4: Simplify right side
    861,772.72x = 493,230,682,530.44
  5. Step 5: Solve for x
    x = 493,230,682,530.44/861,772.72
  6. Step 6: Final answer
    x = 572,344.27

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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.