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Finding the Fourth Proportional to 576,431.78, 795,489.27 and 361,580.90

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Solution

The fourth proportional to 576,431.78, 795,489.27 and 361,580.90 is: 498,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,431.78 : 795,489.27 = 361,580.90 : x
  2. Step 2: Convert to fraction form
    576,431.78/795,489.27 = 361,580.90/x
  3. Step 3: Cross multiply
    576,431.78x = 795,489.27 × 361,580.90
  4. Step 4: Simplify right side
    576,431.78x = 287,633,726,186.94
  5. Step 5: Solve for x
    x = 287,633,726,186.94/576,431.78
  6. Step 6: Final answer
    x = 498,990.06

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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.