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Finding the Fourth Proportional to 801,679.80, 1,203,200.10 and 328,704.60

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Solution

The fourth proportional to 801,679.80, 1,203,200.10 and 328,704.60 is: 493,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,679.80 : 1,203,200.10 = 328,704.60 : x
  2. Step 2: Convert to fraction form
    801,679.80/1,203,200.10 = 328,704.60/x
  3. Step 3: Cross multiply
    801,679.80x = 1,203,200.10 × 328,704.60
  4. Step 4: Simplify right side
    801,679.80x = 395,497,407,590.46
  5. Step 5: Solve for x
    x = 395,497,407,590.46/801,679.80
  6. Step 6: Final answer
    x = 493,335.88

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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.