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Finding the Fourth Proportional to 1,231,644.30, 1,844,356.05 and 808,629.90

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Solution

The fourth proportional to 1,231,644.30, 1,844,356.05 and 808,629.90 is: 1,210,902.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,644.30 : 1,844,356.05 = 808,629.90 : x
  2. Step 2: Convert to fraction form
    1,231,644.30/1,844,356.05 = 808,629.90/x
  3. Step 3: Cross multiply
    1,231,644.30x = 1,844,356.05 × 808,629.90
  4. Step 4: Simplify right side
    1,231,644.30x = 1,491,401,448,275.90
  5. Step 5: Solve for x
    x = 1,491,401,448,275.90/1,231,644.30
  6. Step 6: Final answer
    x = 1,210,902.73

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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.