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Finding the Fourth Proportional to 667,307,568.45, 1,000,961,352.68 and 621,957,936.45

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Solution

The fourth proportional to 667,307,568.45, 1,000,961,352.68 and 621,957,936.45 is: 932,936,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,307,568.45 : 1,000,961,352.68 = 621,957,936.45 : x
  2. Step 2: Convert to fraction form
    667,307,568.45/1,000,961,352.68 = 621,957,936.45/x
  3. Step 3: Cross multiply
    667,307,568.45x = 1,000,961,352.68 × 621,957,936.45
  4. Step 4: Simplify right side
    667,307,568.45x = 622,555,857,375,943,680
  5. Step 5: Solve for x
    x = 622,555,857,375,943,680/667,307,568.45
  6. Step 6: Final answer
    x = 932,936,904.68

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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.