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Finding the Fourth Proportional to 488,445.90, 731,684.70 and 329,013.60

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Solution

The fourth proportional to 488,445.90, 731,684.70 and 329,013.60 is: 492,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,445.90 : 731,684.70 = 329,013.60 : x
  2. Step 2: Convert to fraction form
    488,445.90/731,684.70 = 329,013.60/x
  3. Step 3: Cross multiply
    488,445.90x = 731,684.70 × 329,013.60
  4. Step 4: Simplify right side
    488,445.90x = 240,734,217,211.92
  5. Step 5: Solve for x
    x = 240,734,217,211.92/488,445.90
  6. Step 6: Final answer
    x = 492,857.48

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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.