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Finding the Fourth Proportional to 664,248.90, 996,470.55 and 348,729.60

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Solution

The fourth proportional to 664,248.90, 996,470.55 and 348,729.60 is: 523,145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,248.90 : 996,470.55 = 348,729.60 : x
  2. Step 2: Convert to fraction form
    664,248.90/996,470.55 = 348,729.60/x
  3. Step 3: Cross multiply
    664,248.90x = 996,470.55 × 348,729.60
  4. Step 4: Simplify right side
    664,248.90x = 347,498,776,313.28
  5. Step 5: Solve for x
    x = 347,498,776,313.28/664,248.90
  6. Step 6: Final answer
    x = 523,145.43

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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.