Home / 812,448.33-1,121,164.98-449,864.38

Finding the Fourth Proportional to 812,448.33, 1,121,164.98 and 449,864.38

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Solution

The fourth proportional to 812,448.33, 1,121,164.98 and 449,864.38 is: 620,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,448.33 : 1,121,164.98 = 449,864.38 : x
  2. Step 2: Convert to fraction form
    812,448.33/1,121,164.98 = 449,864.38/x
  3. Step 3: Cross multiply
    812,448.33x = 1,121,164.98 × 449,864.38
  4. Step 4: Simplify right side
    812,448.33x = 504,372,188,319.88
  5. Step 5: Solve for x
    x = 504,372,188,319.88/812,448.33
  6. Step 6: Final answer
    x = 620,805.25

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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.