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Finding the Fourth Proportional to 494,745, 682,748.31 and 279,880.50

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Solution

The fourth proportional to 494,745, 682,748.31 and 279,880.50 is: 386,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,745 : 682,748.31 = 279,880.50 : x
  2. Step 2: Convert to fraction form
    494,745/682,748.31 = 279,880.50/x
  3. Step 3: Cross multiply
    494,745x = 682,748.31 × 279,880.50
  4. Step 4: Simplify right side
    494,745x = 191,087,938,376.96
  5. Step 5: Solve for x
    x = 191,087,938,376.96/494,745
  6. Step 6: Final answer
    x = 386,235.21

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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.