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Finding the Fourth Proportional to 499,788.80, 748,516.80 and 489,766.40

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Solution

The fourth proportional to 499,788.80, 748,516.80 and 489,766.40 is: 733,506.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,788.80 : 748,516.80 = 489,766.40 : x
  2. Step 2: Convert to fraction form
    499,788.80/748,516.80 = 489,766.40/x
  3. Step 3: Cross multiply
    499,788.80x = 748,516.80 × 489,766.40
  4. Step 4: Simplify right side
    499,788.80x = 366,598,378,475.52
  5. Step 5: Solve for x
    x = 366,598,378,475.52/499,788.80
  6. Step 6: Final answer
    x = 733,506.59

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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.