Home / 494,279.41-682,135-279,439.47

Finding the Fourth Proportional to 494,279.41, 682,135 and 279,439.47

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Solution

The fourth proportional to 494,279.41, 682,135 and 279,439.47 is: 385,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,279.41 : 682,135 = 279,439.47 : x
  2. Step 2: Convert to fraction form
    494,279.41/682,135 = 279,439.47/x
  3. Step 3: Cross multiply
    494,279.41x = 682,135 × 279,439.47
  4. Step 4: Simplify right side
    494,279.41x = 190,615,442,868.45
  5. Step 5: Solve for x
    x = 190,615,442,868.45/494,279.41
  6. Step 6: Final answer
    x = 385,643.10

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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.