Home / 812,388.25-1,121,158.91-449,845.84

Finding the Fourth Proportional to 812,388.25, 1,121,158.91 and 449,845.84

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Solution

The fourth proportional to 812,388.25, 1,121,158.91 and 449,845.84 is: 620,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,388.25 : 1,121,158.91 = 449,845.84 : x
  2. Step 2: Convert to fraction form
    812,388.25/1,121,158.91 = 449,845.84/x
  3. Step 3: Cross multiply
    812,388.25x = 1,121,158.91 × 449,845.84
  4. Step 4: Simplify right side
    812,388.25x = 504,348,666,590.31
  5. Step 5: Solve for x
    x = 504,348,666,590.31/812,388.25
  6. Step 6: Final answer
    x = 620,822.21

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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.