Home / 812,361.59-1,121,094.03-449,785.44

Finding the Fourth Proportional to 812,361.59, 1,121,094.03 and 449,785.44

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Solution

The fourth proportional to 812,361.59, 1,121,094.03 and 449,785.44 is: 620,723.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,361.59 : 1,121,094.03 = 449,785.44 : x
  2. Step 2: Convert to fraction form
    812,361.59/1,121,094.03 = 449,785.44/x
  3. Step 3: Cross multiply
    812,361.59x = 1,121,094.03 × 449,785.44
  4. Step 4: Simplify right side
    812,361.59x = 504,251,773,251.62
  5. Step 5: Solve for x
    x = 504,251,773,251.62/812,361.59
  6. Step 6: Final answer
    x = 620,723.31

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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.