Home / 780,341.38-1,170,511.92-219,375.88

Finding the Fourth Proportional to 780,341.38, 1,170,511.92 and 219,375.88

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Solution

The fourth proportional to 780,341.38, 1,170,511.92 and 219,375.88 is: 329,063.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,341.38 : 1,170,511.92 = 219,375.88 : x
  2. Step 2: Convert to fraction form
    780,341.38/1,170,511.92 = 219,375.88/x
  3. Step 3: Cross multiply
    780,341.38x = 1,170,511.92 × 219,375.88
  4. Step 4: Simplify right side
    780,341.38x = 256,782,082,500.49
  5. Step 5: Solve for x
    x = 256,782,082,500.49/780,341.38
  6. Step 6: Final answer
    x = 329,063.78

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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.