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Finding the Fourth Proportional to 441,987.30, 663,656.49 and 423,791.46

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Solution

The fourth proportional to 441,987.30, 663,656.49 and 423,791.46 is: 636,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,987.30 : 663,656.49 = 423,791.46 : x
  2. Step 2: Convert to fraction form
    441,987.30/663,656.49 = 423,791.46/x
  3. Step 3: Cross multiply
    441,987.30x = 663,656.49 × 423,791.46
  4. Step 4: Simplify right side
    441,987.30x = 281,251,952,835.58
  5. Step 5: Solve for x
    x = 281,251,952,835.58/441,987.30
  6. Step 6: Final answer
    x = 636,334.92

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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.