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Finding the Fourth Proportional to 489,078.80, 733,982.70 and 252,299.60

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Solution

The fourth proportional to 489,078.80, 733,982.70 and 252,299.60 is: 378,637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,078.80 : 733,982.70 = 252,299.60 : x
  2. Step 2: Convert to fraction form
    489,078.80/733,982.70 = 252,299.60/x
  3. Step 3: Cross multiply
    489,078.80x = 733,982.70 × 252,299.60
  4. Step 4: Simplify right side
    489,078.80x = 185,183,541,616.92
  5. Step 5: Solve for x
    x = 185,183,541,616.92/489,078.80
  6. Step 6: Final answer
    x = 378,637.43

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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.