Home / 1,279,149.76-1,918,082.04-425,919.79

Finding the Fourth Proportional to 1,279,149.76, 1,918,082.04 and 425,919.79

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Solution

The fourth proportional to 1,279,149.76, 1,918,082.04 and 425,919.79 is: 638,665.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,149.76 : 1,918,082.04 = 425,919.79 : x
  2. Step 2: Convert to fraction form
    1,279,149.76/1,918,082.04 = 425,919.79/x
  3. Step 3: Cross multiply
    1,279,149.76x = 1,918,082.04 × 425,919.79
  4. Step 4: Simplify right side
    1,279,149.76x = 816,949,099,679.57
  5. Step 5: Solve for x
    x = 816,949,099,679.57/1,279,149.76
  6. Step 6: Final answer
    x = 638,665.72

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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.