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Finding the Fourth Proportional to 489,474.80, 733,716.48 and 331,719.20

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Solution

The fourth proportional to 489,474.80, 733,716.48 and 331,719.20 is: 497,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,474.80 : 733,716.48 = 331,719.20 : x
  2. Step 2: Convert to fraction form
    489,474.80/733,716.48 = 331,719.20/x
  3. Step 3: Cross multiply
    489,474.80x = 733,716.48 × 331,719.20
  4. Step 4: Simplify right side
    489,474.80x = 243,387,843,772.42
  5. Step 5: Solve for x
    x = 243,387,843,772.42/489,474.80
  6. Step 6: Final answer
    x = 497,242.85

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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.