Home / 1,285,504.75-1,928,276.16-486,571.78

Finding the Fourth Proportional to 1,285,504.75, 1,928,276.16 and 486,571.78

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Solution

The fourth proportional to 1,285,504.75, 1,928,276.16 and 486,571.78 is: 729,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,504.75 : 1,928,276.16 = 486,571.78 : x
  2. Step 2: Convert to fraction form
    1,285,504.75/1,928,276.16 = 486,571.78/x
  3. Step 3: Cross multiply
    1,285,504.75x = 1,928,276.16 × 486,571.78
  4. Step 4: Simplify right side
    1,285,504.75x = 938,244,753,861.38
  5. Step 5: Solve for x
    x = 938,244,753,861.38/1,285,504.75
  6. Step 6: Final answer
    x = 729,864.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.