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Finding the Fourth Proportional to 817,293.22, 1,127,843.13 and 454,717.78

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Solution

The fourth proportional to 817,293.22, 1,127,843.13 and 454,717.78 is: 627,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,293.22 : 1,127,843.13 = 454,717.78 : x
  2. Step 2: Convert to fraction form
    817,293.22/1,127,843.13 = 454,717.78/x
  3. Step 3: Cross multiply
    817,293.22x = 1,127,843.13 × 454,717.78
  4. Step 4: Simplify right side
    817,293.22x = 512,850,324,261.85
  5. Step 5: Solve for x
    x = 512,850,324,261.85/817,293.22
  6. Step 6: Final answer
    x = 627,498.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.