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Finding the Fourth Proportional to 494,428.94, 682,325.32 and 279,601

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Solution

The fourth proportional to 494,428.94, 682,325.32 and 279,601 is: 385,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,428.94 : 682,325.32 = 279,601 : x
  2. Step 2: Convert to fraction form
    494,428.94/682,325.32 = 279,601/x
  3. Step 3: Cross multiply
    494,428.94x = 682,325.32 × 279,601
  4. Step 4: Simplify right side
    494,428.94x = 190,778,841,797.32
  5. Step 5: Solve for x
    x = 190,778,841,797.32/494,428.94
  6. Step 6: Final answer
    x = 385,856.95

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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.