Home / 812,202.88-1,120,803.64-449,601.12

Finding the Fourth Proportional to 812,202.88, 1,120,803.64 and 449,601.12

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Solution

The fourth proportional to 812,202.88, 1,120,803.64 and 449,601.12 is: 620,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,202.88 : 1,120,803.64 = 449,601.12 : x
  2. Step 2: Convert to fraction form
    812,202.88/1,120,803.64 = 449,601.12/x
  3. Step 3: Cross multiply
    812,202.88x = 1,120,803.64 × 449,601.12
  4. Step 4: Simplify right side
    812,202.88x = 503,914,571,844.08
  5. Step 5: Solve for x
    x = 503,914,571,844.08/812,202.88
  6. Step 6: Final answer
    x = 620,429.43

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Double scale
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Similar ratio
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1.5x scale

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.