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Finding the Fourth Proportional to 664,987.60, 996,825.30 and 327,752.20

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Solution

The fourth proportional to 664,987.60, 996,825.30 and 327,752.20 is: 491,304.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,987.60 : 996,825.30 = 327,752.20 : x
  2. Step 2: Convert to fraction form
    664,987.60/996,825.30 = 327,752.20/x
  3. Step 3: Cross multiply
    664,987.60x = 996,825.30 × 327,752.20
  4. Step 4: Simplify right side
    664,987.60x = 326,711,685,090.66
  5. Step 5: Solve for x
    x = 326,711,685,090.66/664,987.60
  6. Step 6: Final answer
    x = 491,304.93

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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.