Home / 1,278,408.88-1,917,114.97-479,254.38

Finding the Fourth Proportional to 1,278,408.88, 1,917,114.97 and 479,254.38

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Solution

The fourth proportional to 1,278,408.88, 1,917,114.97 and 479,254.38 is: 718,694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,408.88 : 1,917,114.97 = 479,254.38 : x
  2. Step 2: Convert to fraction form
    1,278,408.88/1,917,114.97 = 479,254.38/x
  3. Step 3: Cross multiply
    1,278,408.88x = 1,917,114.97 × 479,254.38
  4. Step 4: Simplify right side
    1,278,408.88x = 918,785,746,336.07
  5. Step 5: Solve for x
    x = 918,785,746,336.07/1,278,408.88
  6. Step 6: Final answer
    x = 718,694.75

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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.