Home / 812,449.77-1,121,166.94-449,865.82

Finding the Fourth Proportional to 812,449.77, 1,121,166.94 and 449,865.82

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Solution

The fourth proportional to 812,449.77, 1,121,166.94 and 449,865.82 is: 620,807.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,449.77 : 1,121,166.94 = 449,865.82 : x
  2. Step 2: Convert to fraction form
    812,449.77/1,121,166.94 = 449,865.82/x
  3. Step 3: Cross multiply
    812,449.77x = 1,121,166.94 × 449,865.82
  4. Step 4: Simplify right side
    812,449.77x = 504,374,686,783.78
  5. Step 5: Solve for x
    x = 504,374,686,783.78/812,449.77
  6. Step 6: Final answer
    x = 620,807.23

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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.