Home / 1,278,876.96-1,917,900.12-425,719.44

Finding the Fourth Proportional to 1,278,876.96, 1,917,900.12 and 425,719.44

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Solution

The fourth proportional to 1,278,876.96, 1,917,900.12 and 425,719.44 is: 638,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,876.96 : 1,917,900.12 = 425,719.44 : x
  2. Step 2: Convert to fraction form
    1,278,876.96/1,917,900.12 = 425,719.44/x
  3. Step 3: Cross multiply
    1,278,876.96x = 1,917,900.12 × 425,719.44
  4. Step 4: Simplify right side
    1,278,876.96x = 816,487,365,062.33
  5. Step 5: Solve for x
    x = 816,487,365,062.33/1,278,876.96
  6. Step 6: Final answer
    x = 638,440.91

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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.