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Finding the Fourth Proportional to 639,243.84, 959,454.72 and 323,924.16

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Solution

The fourth proportional to 639,243.84, 959,454.72 and 323,924.16 is: 486,184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,243.84 : 959,454.72 = 323,924.16 : x
  2. Step 2: Convert to fraction form
    639,243.84/959,454.72 = 323,924.16/x
  3. Step 3: Cross multiply
    639,243.84x = 959,454.72 × 323,924.16
  4. Step 4: Simplify right side
    639,243.84x = 310,790,564,234.04
  5. Step 5: Solve for x
    x = 310,790,564,234.04/639,243.84
  6. Step 6: Final answer
    x = 486,184.68

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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.