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Finding the Fourth Proportional to 603,339,793.20, 905,009,689.80 and 327,840,778.80

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Solution

The fourth proportional to 603,339,793.20, 905,009,689.80 and 327,840,778.80 is: 491,761,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,339,793.20 : 905,009,689.80 = 327,840,778.80 : x
  2. Step 2: Convert to fraction form
    603,339,793.20/905,009,689.80 = 327,840,778.80/x
  3. Step 3: Cross multiply
    603,339,793.20x = 905,009,689.80 × 327,840,778.80
  4. Step 4: Simplify right side
    603,339,793.20x = 296,699,081,525,578,432
  5. Step 5: Solve for x
    x = 296,699,081,525,578,432/603,339,793.20
  6. Step 6: Final answer
    x = 491,761,168.20

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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.