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Finding the Fourth Proportional to 494,439.69, 682,323.50 and 279,580.61

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Solution

The fourth proportional to 494,439.69, 682,323.50 and 279,580.61 is: 385,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,439.69 : 682,323.50 = 279,580.61 : x
  2. Step 2: Convert to fraction form
    494,439.69/682,323.50 = 279,580.61/x
  3. Step 3: Cross multiply
    494,439.69x = 682,323.50 × 279,580.61
  4. Step 4: Simplify right side
    494,439.69x = 190,764,421,179.45
  5. Step 5: Solve for x
    x = 190,764,421,179.45/494,439.69
  6. Step 6: Final answer
    x = 385,819.39

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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.