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Finding the Fourth Proportional to 494,401.55, 682,287.57 and 279,573.75

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Solution

The fourth proportional to 494,401.55, 682,287.57 and 279,573.75 is: 385,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,401.55 : 682,287.57 = 279,573.75 : x
  2. Step 2: Convert to fraction form
    494,401.55/682,287.57 = 279,573.75/x
  3. Step 3: Cross multiply
    494,401.55x = 682,287.57 × 279,573.75
  4. Step 4: Simplify right side
    494,401.55x = 190,749,694,523.29
  5. Step 5: Solve for x
    x = 190,749,694,523.29/494,401.55
  6. Step 6: Final answer
    x = 385,819.37

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1.5x scale

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.