Home / 724,469,122.80-1,086,703,684.20-521,907,433.20

Finding the Fourth Proportional to 724,469,122.80, 1,086,703,684.20 and 521,907,433.20

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Solution

The fourth proportional to 724,469,122.80, 1,086,703,684.20 and 521,907,433.20 is: 782,861,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,469,122.80 : 1,086,703,684.20 = 521,907,433.20 : x
  2. Step 2: Convert to fraction form
    724,469,122.80/1,086,703,684.20 = 521,907,433.20/x
  3. Step 3: Cross multiply
    724,469,122.80x = 1,086,703,684.20 × 521,907,433.20
  4. Step 4: Simplify right side
    724,469,122.80x = 567,158,730,469,805,376
  5. Step 5: Solve for x
    x = 567,158,730,469,805,376/724,469,122.80
  6. Step 6: Final answer
    x = 782,861,149.80

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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.