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Finding the Fourth Proportional to 664,937.20, 998,032.20 and 349,620.40

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Solution

The fourth proportional to 664,937.20, 998,032.20 and 349,620.40 is: 524,759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,937.20 : 998,032.20 = 349,620.40 : x
  2. Step 2: Convert to fraction form
    664,937.20/998,032.20 = 349,620.40/x
  3. Step 3: Cross multiply
    664,937.20x = 998,032.20 × 349,620.40
  4. Step 4: Simplify right side
    664,937.20x = 348,932,416,976.88
  5. Step 5: Solve for x
    x = 348,932,416,976.88/664,937.20
  6. Step 6: Final answer
    x = 524,759.96

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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.