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Finding the Fourth Proportional to 488,334.90, 731,518.20 and 328,902.60

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Solution

The fourth proportional to 488,334.90, 731,518.20 and 328,902.60 is: 492,691.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,334.90 : 731,518.20 = 328,902.60 : x
  2. Step 2: Convert to fraction form
    488,334.90/731,518.20 = 328,902.60/x
  3. Step 3: Cross multiply
    488,334.90x = 731,518.20 × 328,902.60
  4. Step 4: Simplify right side
    488,334.90x = 240,598,237,927.32
  5. Step 5: Solve for x
    x = 240,598,237,927.32/488,334.90
  6. Step 6: Final answer
    x = 492,691.06

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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.