Home / 494,721.68-682,716.16-279,857.20

Finding the Fourth Proportional to 494,721.68, 682,716.16 and 279,857.20

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Solution

The fourth proportional to 494,721.68, 682,716.16 and 279,857.20 is: 386,203.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,721.68 : 682,716.16 = 279,857.20 : x
  2. Step 2: Convert to fraction form
    494,721.68/682,716.16 = 279,857.20/x
  3. Step 3: Cross multiply
    494,721.68x = 682,716.16 × 279,857.20
  4. Step 4: Simplify right side
    494,721.68x = 191,063,032,932.35
  5. Step 5: Solve for x
    x = 191,063,032,932.35/494,721.68
  6. Step 6: Final answer
    x = 386,203.07

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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.