Home / 1,278,414.12-1,917,123.03-479,259.75

Finding the Fourth Proportional to 1,278,414.12, 1,917,123.03 and 479,259.75

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Solution

The fourth proportional to 1,278,414.12, 1,917,123.03 and 479,259.75 is: 718,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,414.12 : 1,917,123.03 = 479,259.75 : x
  2. Step 2: Convert to fraction form
    1,278,414.12/1,917,123.03 = 479,259.75/x
  3. Step 3: Cross multiply
    1,278,414.12x = 1,917,123.03 × 479,259.75
  4. Step 4: Simplify right side
    1,278,414.12x = 918,799,904,077.04
  5. Step 5: Solve for x
    x = 918,799,904,077.04/1,278,414.12
  6. Step 6: Final answer
    x = 718,702.88

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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.