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Finding the Fourth Proportional to 494,652.50, 682,620.54 and 279,787.94

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Solution

The fourth proportional to 494,652.50, 682,620.54 and 279,787.94 is: 386,107.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,652.50 : 682,620.54 = 279,787.94 : x
  2. Step 2: Convert to fraction form
    494,652.50/682,620.54 = 279,787.94/x
  3. Step 3: Cross multiply
    494,652.50x = 682,620.54 × 279,787.94
  4. Step 4: Simplify right side
    494,652.50x = 190,988,994,688.29
  5. Step 5: Solve for x
    x = 190,988,994,688.29/494,652.50
  6. Step 6: Final answer
    x = 386,107.41

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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.