Home / 812,377.35-1,121,115.72-449,801.16

Finding the Fourth Proportional to 812,377.35, 1,121,115.72 and 449,801.16

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Solution

The fourth proportional to 812,377.35, 1,121,115.72 and 449,801.16 is: 620,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,377.35 : 1,121,115.72 = 449,801.16 : x
  2. Step 2: Convert to fraction form
    812,377.35/1,121,115.72 = 449,801.16/x
  3. Step 3: Cross multiply
    812,377.35x = 1,121,115.72 × 449,801.16
  4. Step 4: Simplify right side
    812,377.35x = 504,279,151,350.24
  5. Step 5: Solve for x
    x = 504,279,151,350.24/812,377.35
  6. Step 6: Final answer
    x = 620,744.97

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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.