Home / 1,278,433.25-1,917,151.39-479,279.21

Finding the Fourth Proportional to 1,278,433.25, 1,917,151.39 and 479,279.21

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Solution

The fourth proportional to 1,278,433.25, 1,917,151.39 and 479,279.21 is: 718,731.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,433.25 : 1,917,151.39 = 479,279.21 : x
  2. Step 2: Convert to fraction form
    1,278,433.25/1,917,151.39 = 479,279.21/x
  3. Step 3: Cross multiply
    1,278,433.25x = 1,917,151.39 × 479,279.21
  4. Step 4: Simplify right side
    1,278,433.25x = 918,850,792,865.65
  5. Step 5: Solve for x
    x = 918,850,792,865.65/1,278,433.25
  6. Step 6: Final answer
    x = 718,731.93

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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.