Home / 812,434.43-1,121,145.81-449,850.50

Finding the Fourth Proportional to 812,434.43, 1,121,145.81 and 449,850.50

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Solution

The fourth proportional to 812,434.43, 1,121,145.81 and 449,850.50 is: 620,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,434.43 : 1,121,145.81 = 449,850.50 : x
  2. Step 2: Convert to fraction form
    812,434.43/1,121,145.81 = 449,850.50/x
  3. Step 3: Cross multiply
    812,434.43x = 1,121,145.81 × 449,850.50
  4. Step 4: Simplify right side
    812,434.43x = 504,348,000,952.15
  5. Step 5: Solve for x
    x = 504,348,000,952.15/812,434.43
  6. Step 6: Final answer
    x = 620,786.10

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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.