Home / 811,940.74-1,120,469.97-449,365.30

Finding the Fourth Proportional to 811,940.74, 1,120,469.97 and 449,365.30

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Solution

The fourth proportional to 811,940.74, 1,120,469.97 and 449,365.30 is: 620,119.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,940.74 : 1,120,469.97 = 449,365.30 : x
  2. Step 2: Convert to fraction form
    811,940.74/1,120,469.97 = 449,365.30/x
  3. Step 3: Cross multiply
    811,940.74x = 1,120,469.97 × 449,365.30
  4. Step 4: Simplify right side
    811,940.74x = 503,500,324,210.04
  5. Step 5: Solve for x
    x = 503,500,324,210.04/811,940.74
  6. Step 6: Final answer
    x = 620,119.55

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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.