Home / 728,714.78-1,093,212.27-279,400.61

Finding the Fourth Proportional to 728,714.78, 1,093,212.27 and 279,400.61

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Solution

The fourth proportional to 728,714.78, 1,093,212.27 and 279,400.61 is: 419,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,714.78 : 1,093,212.27 = 279,400.61 : x
  2. Step 2: Convert to fraction form
    728,714.78/1,093,212.27 = 279,400.61/x
  3. Step 3: Cross multiply
    728,714.78x = 1,093,212.27 × 279,400.61
  4. Step 4: Simplify right side
    728,714.78x = 305,444,170,449.26
  5. Step 5: Solve for x
    x = 305,444,170,449.26/728,714.78
  6. Step 6: Final answer
    x = 419,154.63

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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.