Home / 812,388.50-1,121,159.25-449,846.09

Finding the Fourth Proportional to 812,388.50, 1,121,159.25 and 449,846.09

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Solution

The fourth proportional to 812,388.50, 1,121,159.25 and 449,846.09 is: 620,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,388.50 : 1,121,159.25 = 449,846.09 : x
  2. Step 2: Convert to fraction form
    812,388.50/1,121,159.25 = 449,846.09/x
  3. Step 3: Cross multiply
    812,388.50x = 1,121,159.25 × 449,846.09
  4. Step 4: Simplify right side
    812,388.50x = 504,349,104,879.83
  5. Step 5: Solve for x
    x = 504,349,104,879.83/812,388.50
  6. Step 6: Final answer
    x = 620,822.56

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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.