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Finding the Fourth Proportional to 494,650.50, 682,617.72 and 279,785.94

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Solution

The fourth proportional to 494,650.50, 682,617.72 and 279,785.94 is: 386,104.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,650.50 : 682,617.72 = 279,785.94 : x
  2. Step 2: Convert to fraction form
    494,650.50/682,617.72 = 279,785.94/x
  3. Step 3: Cross multiply
    494,650.50x = 682,617.72 × 279,785.94
  4. Step 4: Simplify right side
    494,650.50x = 190,986,840,450.86
  5. Step 5: Solve for x
    x = 190,986,840,450.86/494,650.50
  6. Step 6: Final answer
    x = 386,104.61

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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.