Home / 1,279,078.20-1,918,617.17-380,532.78

Finding the Fourth Proportional to 1,279,078.20, 1,918,617.17 and 380,532.78

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Solution

The fourth proportional to 1,279,078.20, 1,918,617.17 and 380,532.78 is: 570,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,078.20 : 1,918,617.17 = 380,532.78 : x
  2. Step 2: Convert to fraction form
    1,279,078.20/1,918,617.17 = 380,532.78/x
  3. Step 3: Cross multiply
    1,279,078.20x = 1,918,617.17 × 380,532.78
  4. Step 4: Simplify right side
    1,279,078.20x = 730,096,723,553.17
  5. Step 5: Solve for x
    x = 730,096,723,553.17/1,279,078.20
  6. Step 6: Final answer
    x = 570,799.13

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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.