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Finding the Fourth Proportional to 576,374.31, 862,789.86 and 491,343.75

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Solution

The fourth proportional to 576,374.31, 862,789.86 and 491,343.75 is: 735,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,374.31 : 862,789.86 = 491,343.75 : x
  2. Step 2: Convert to fraction form
    576,374.31/862,789.86 = 491,343.75/x
  3. Step 3: Cross multiply
    576,374.31x = 862,789.86 × 491,343.75
  4. Step 4: Simplify right side
    576,374.31x = 423,926,405,274.38
  5. Step 5: Solve for x
    x = 423,926,405,274.38/576,374.31
  6. Step 6: Final answer
    x = 735,505.38

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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.