Home / 812,368.55-1,121,103.62-449,792.41

Finding the Fourth Proportional to 812,368.55, 1,121,103.62 and 449,792.41

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Solution

The fourth proportional to 812,368.55, 1,121,103.62 and 449,792.41 is: 620,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,368.55 : 1,121,103.62 = 449,792.41 : x
  2. Step 2: Convert to fraction form
    812,368.55/1,121,103.62 = 449,792.41/x
  3. Step 3: Cross multiply
    812,368.55x = 1,121,103.62 × 449,792.41
  4. Step 4: Simplify right side
    812,368.55x = 504,263,891,245.04
  5. Step 5: Solve for x
    x = 504,263,891,245.04/812,368.55
  6. Step 6: Final answer
    x = 620,732.91

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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.