Home / 721,765,937.40-995,866,282.32-408,500,151.36

Finding the Fourth Proportional to 721,765,937.40, 995,866,282.32 and 408,500,151.36

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Solution

The fourth proportional to 721,765,937.40, 995,866,282.32 and 408,500,151.36 is: 563,633,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,765,937.40 : 995,866,282.32 = 408,500,151.36 : x
  2. Step 2: Convert to fraction form
    721,765,937.40/995,866,282.32 = 408,500,151.36/x
  3. Step 3: Cross multiply
    721,765,937.40x = 995,866,282.32 × 408,500,151.36
  4. Step 4: Simplify right side
    721,765,937.40x = 406,811,527,062,040,512
  5. Step 5: Solve for x
    x = 406,811,527,062,040,512/721,765,937.40
  6. Step 6: Final answer
    x = 563,633,590.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.