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Finding the Fourth Proportional to 485,774.76, 728,309.82 and 327,610.92

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Solution

The fourth proportional to 485,774.76, 728,309.82 and 327,610.92 is: 491,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,774.76 : 728,309.82 = 327,610.92 : x
  2. Step 2: Convert to fraction form
    485,774.76/728,309.82 = 327,610.92/x
  3. Step 3: Cross multiply
    485,774.76x = 728,309.82 × 327,610.92
  4. Step 4: Simplify right side
    485,774.76x = 238,602,250,175.23
  5. Step 5: Solve for x
    x = 238,602,250,175.23/485,774.76
  6. Step 6: Final answer
    x = 491,178.77

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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.