Home / 812,451.27-1,121,169.01-449,867.32

Finding the Fourth Proportional to 812,451.27, 1,121,169.01 and 449,867.32

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Solution

The fourth proportional to 812,451.27, 1,121,169.01 and 449,867.32 is: 620,809.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,451.27 : 1,121,169.01 = 449,867.32 : x
  2. Step 2: Convert to fraction form
    812,451.27/1,121,169.01 = 449,867.32/x
  3. Step 3: Cross multiply
    812,451.27x = 1,121,169.01 × 449,867.32
  4. Step 4: Simplify right side
    812,451.27x = 504,377,297,795.75
  5. Step 5: Solve for x
    x = 504,377,297,795.75/812,451.27
  6. Step 6: Final answer
    x = 620,809.29

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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.