Home / 1,278,881.46-1,917,906.87-425,723.94

Finding the Fourth Proportional to 1,278,881.46, 1,917,906.87 and 425,723.94

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Solution

The fourth proportional to 1,278,881.46, 1,917,906.87 and 425,723.94 is: 638,447.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,881.46 : 1,917,906.87 = 425,723.94 : x
  2. Step 2: Convert to fraction form
    1,278,881.46/1,917,906.87 = 425,723.94/x
  3. Step 3: Cross multiply
    1,278,881.46x = 1,917,906.87 × 425,723.94
  4. Step 4: Simplify right side
    1,278,881.46x = 816,498,869,249.47
  5. Step 5: Solve for x
    x = 816,498,869,249.47/1,278,881.46
  6. Step 6: Final answer
    x = 638,447.66

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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.