Home / 638,188,520.23-957,004,757.92-338,991,972.09

Finding the Fourth Proportional to 638,188,520.23, 957,004,757.92 and 338,991,972.09

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Solution

The fourth proportional to 638,188,520.23, 957,004,757.92 and 338,991,972.09 is: 508,340,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,188,520.23 : 957,004,757.92 = 338,991,972.09 : x
  2. Step 2: Convert to fraction form
    638,188,520.23/957,004,757.92 = 338,991,972.09/x
  3. Step 3: Cross multiply
    638,188,520.23x = 957,004,757.92 × 338,991,972.09
  4. Step 4: Simplify right side
    638,188,520.23x = 324,416,930,183,648,832
  5. Step 5: Solve for x
    x = 324,416,930,183,648,832/638,188,520.23
  6. Step 6: Final answer
    x = 508,340,278.62

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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.