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Finding the Fourth Proportional to 812,269, 1,120,931.22 and 454,573

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Solution

The fourth proportional to 812,269, 1,120,931.22 and 454,573 is: 627,310.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,269 : 1,120,931.22 = 454,573 : x
  2. Step 2: Convert to fraction form
    812,269/1,120,931.22 = 454,573/x
  3. Step 3: Cross multiply
    812,269x = 1,120,931.22 × 454,573
  4. Step 4: Simplify right side
    812,269x = 509,545,067,469.06
  5. Step 5: Solve for x
    x = 509,545,067,469.06/812,269
  6. Step 6: Final answer
    x = 627,310.74

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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.