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Finding the Fourth Proportional to 494,579.16, 682,511.16 and 279,711.16

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Solution

The fourth proportional to 494,579.16, 682,511.16 and 279,711.16 is: 385,996.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,579.16 : 682,511.16 = 279,711.16 : x
  2. Step 2: Convert to fraction form
    494,579.16/682,511.16 = 279,711.16/x
  3. Step 3: Cross multiply
    494,579.16x = 682,511.16 × 279,711.16
  4. Step 4: Simplify right side
    494,579.16x = 190,905,988,276.55
  5. Step 5: Solve for x
    x = 190,905,988,276.55/494,579.16
  6. Step 6: Final answer
    x = 385,996.83

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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.