Home / 728,717.78-1,093,216.77-279,403.61

Finding the Fourth Proportional to 728,717.78, 1,093,216.77 and 279,403.61

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Solution

The fourth proportional to 728,717.78, 1,093,216.77 and 279,403.61 is: 419,159.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,717.78 : 1,093,216.77 = 279,403.61 : x
  2. Step 2: Convert to fraction form
    728,717.78/1,093,216.77 = 279,403.61/x
  3. Step 3: Cross multiply
    728,717.78x = 1,093,216.77 × 279,403.61
  4. Step 4: Simplify right side
    728,717.78x = 305,448,712,050.54
  5. Step 5: Solve for x
    x = 305,448,712,050.54/728,717.78
  6. Step 6: Final answer
    x = 419,159.13

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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.