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Finding the Fourth Proportional to 587,789.78, 811,158.78 and 329,723.93

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Solution

The fourth proportional to 587,789.78, 811,158.78 and 329,723.93 is: 455,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,789.78 : 811,158.78 = 329,723.93 : x
  2. Step 2: Convert to fraction form
    587,789.78/811,158.78 = 329,723.93/x
  3. Step 3: Cross multiply
    587,789.78x = 811,158.78 × 329,723.93
  4. Step 4: Simplify right side
    587,789.78x = 267,458,456,739.81
  5. Step 5: Solve for x
    x = 267,458,456,739.81/587,789.78
  6. Step 6: Final answer
    x = 455,024.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.