Home / 465,447.16-698,156.78-128,508.38

Finding the Fourth Proportional to 465,447.16, 698,156.78 and 128,508.38

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Solution

The fourth proportional to 465,447.16, 698,156.78 and 128,508.38 is: 192,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,447.16 : 698,156.78 = 128,508.38 : x
  2. Step 2: Convert to fraction form
    465,447.16/698,156.78 = 128,508.38/x
  3. Step 3: Cross multiply
    465,447.16x = 698,156.78 × 128,508.38
  4. Step 4: Simplify right side
    465,447.16x = 89,718,993,614.30
  5. Step 5: Solve for x
    x = 89,718,993,614.30/465,447.16
  6. Step 6: Final answer
    x = 192,758.71

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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.