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Finding the Fourth Proportional to 494,708.97, 682,698.60 and 279,844.47

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Solution

The fourth proportional to 494,708.97, 682,698.60 and 279,844.47 is: 386,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,708.97 : 682,698.60 = 279,844.47 : x
  2. Step 2: Convert to fraction form
    494,708.97/682,698.60 = 279,844.47/x
  3. Step 3: Cross multiply
    494,708.97x = 682,698.60 × 279,844.47
  4. Step 4: Simplify right side
    494,708.97x = 191,049,427,886.74
  5. Step 5: Solve for x
    x = 191,049,427,886.74/494,708.97
  6. Step 6: Final answer
    x = 386,185.49

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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.