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Finding the Fourth Proportional to 494,668, 682,641.84 and 279,803.44

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Solution

The fourth proportional to 494,668, 682,641.84 and 279,803.44 is: 386,128.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,668 : 682,641.84 = 279,803.44 : x
  2. Step 2: Convert to fraction form
    494,668/682,641.84 = 279,803.44/x
  3. Step 3: Cross multiply
    494,668x = 682,641.84 × 279,803.44
  4. Step 4: Simplify right side
    494,668x = 191,005,535,119.93
  5. Step 5: Solve for x
    x = 191,005,535,119.93/494,668
  6. Step 6: Final answer
    x = 386,128.75

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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.