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Finding the Fourth Proportional to 638,188,358.44, 957,381,513.96 and 269,724,862

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Solution

The fourth proportional to 638,188,358.44, 957,381,513.96 and 269,724,862 is: 404,629,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,188,358.44 : 957,381,513.96 = 269,724,862 : x
  2. Step 2: Convert to fraction form
    638,188,358.44/957,381,513.96 = 269,724,862/x
  3. Step 3: Cross multiply
    638,188,358.44x = 957,381,513.96 × 269,724,862
  4. Step 4: Simplify right side
    638,188,358.44x = 258,229,596,734,212,096
  5. Step 5: Solve for x
    x = 258,229,596,734,212,096/638,188,358.44
  6. Step 6: Final answer
    x = 404,629,124.49

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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.