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Finding the Fourth Proportional to 665,086.60, 996,973.80 and 327,851.20

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Solution

The fourth proportional to 665,086.60, 996,973.80 and 327,851.20 is: 491,453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,086.60 : 996,973.80 = 327,851.20 : x
  2. Step 2: Convert to fraction form
    665,086.60/996,973.80 = 327,851.20/x
  3. Step 3: Cross multiply
    665,086.60x = 996,973.80 × 327,851.20
  4. Step 4: Simplify right side
    665,086.60x = 326,859,056,698.56
  5. Step 5: Solve for x
    x = 326,859,056,698.56/665,086.60
  6. Step 6: Final answer
    x = 491,453.38

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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.