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Finding the Fourth Proportional to 494,464.06, 682,373.82 and 279,636.25

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Solution

The fourth proportional to 494,464.06, 682,373.82 and 279,636.25 is: 385,905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,464.06 : 682,373.82 = 279,636.25 : x
  2. Step 2: Convert to fraction form
    494,464.06/682,373.82 = 279,636.25/x
  3. Step 3: Cross multiply
    494,464.06x = 682,373.82 × 279,636.25
  4. Step 4: Simplify right side
    494,464.06x = 190,816,456,122.98
  5. Step 5: Solve for x
    x = 190,816,456,122.98/494,464.06
  6. Step 6: Final answer
    x = 385,905.61

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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.