Home / 812,466.90-1,121,190.62-449,882.97

Finding the Fourth Proportional to 812,466.90, 1,121,190.62 and 449,882.97

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Solution

The fourth proportional to 812,466.90, 1,121,190.62 and 449,882.97 is: 620,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,466.90 : 1,121,190.62 = 449,882.97 : x
  2. Step 2: Convert to fraction form
    812,466.90/1,121,190.62 = 449,882.97/x
  3. Step 3: Cross multiply
    812,466.90x = 1,121,190.62 × 449,882.97
  4. Step 4: Simplify right side
    812,466.90x = 504,404,563,812.33
  5. Step 5: Solve for x
    x = 504,404,563,812.33/812,466.90
  6. Step 6: Final answer
    x = 620,830.91

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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.