Home / 813,957,197.11-1,220,943,176.52-231,691,213.78

Finding the Fourth Proportional to 813,957,197.11, 1,220,943,176.52 and 231,691,213.78

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Solution

The fourth proportional to 813,957,197.11, 1,220,943,176.52 and 231,691,213.78 is: 347,538,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,957,197.11 : 1,220,943,176.52 = 231,691,213.78 : x
  2. Step 2: Convert to fraction form
    813,957,197.11/1,220,943,176.52 = 231,691,213.78/x
  3. Step 3: Cross multiply
    813,957,197.11x = 1,220,943,176.52 × 231,691,213.78
  4. Step 4: Simplify right side
    813,957,197.11x = 282,881,806,524,327,584
  5. Step 5: Solve for x
    x = 282,881,806,524,327,584/813,957,197.11
  6. Step 6: Final answer
    x = 347,538,921.61

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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.