Home / 1,279,230.72-1,918,845.81-380,685.30

Finding the Fourth Proportional to 1,279,230.72, 1,918,845.81 and 380,685.30

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Solution

The fourth proportional to 1,279,230.72, 1,918,845.81 and 380,685.30 is: 571,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,230.72 : 1,918,845.81 = 380,685.30 : x
  2. Step 2: Convert to fraction form
    1,279,230.72/1,918,845.81 = 380,685.30/x
  3. Step 3: Cross multiply
    1,279,230.72x = 1,918,845.81 × 380,685.30
  4. Step 4: Simplify right side
    1,279,230.72x = 730,476,392,833.59
  5. Step 5: Solve for x
    x = 730,476,392,833.59/1,279,230.72
  6. Step 6: Final answer
    x = 571,027.87

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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.