Home / 1,278,364.60-1,917,546.90-479,672.20

Finding the Fourth Proportional to 1,278,364.60, 1,917,546.90 and 479,672.20

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Solution

The fourth proportional to 1,278,364.60, 1,917,546.90 and 479,672.20 is: 719,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,364.60 : 1,917,546.90 = 479,672.20 : x
  2. Step 2: Convert to fraction form
    1,278,364.60/1,917,546.90 = 479,672.20/x
  3. Step 3: Cross multiply
    1,278,364.60x = 1,917,546.90 × 479,672.20
  4. Step 4: Simplify right side
    1,278,364.60x = 919,793,940,126.18
  5. Step 5: Solve for x
    x = 919,793,940,126.18/1,278,364.60
  6. Step 6: Final answer
    x = 719,508.30

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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.