Home / 728,718.75-1,093,218.23-279,404.57

Finding the Fourth Proportional to 728,718.75, 1,093,218.23 and 279,404.57

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Solution

The fourth proportional to 728,718.75, 1,093,218.23 and 279,404.57 is: 419,160.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,718.75 : 1,093,218.23 = 279,404.57 : x
  2. Step 2: Convert to fraction form
    728,718.75/1,093,218.23 = 279,404.57/x
  3. Step 3: Cross multiply
    728,718.75x = 1,093,218.23 × 279,404.57
  4. Step 4: Simplify right side
    728,718.75x = 305,450,172,900.87
  5. Step 5: Solve for x
    x = 305,450,172,900.87/728,718.75
  6. Step 6: Final answer
    x = 419,160.58

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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.