Home / 1,285,581.30-1,928,391.39-486,648.33

Finding the Fourth Proportional to 1,285,581.30, 1,928,391.39 and 486,648.33

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Solution

The fourth proportional to 1,285,581.30, 1,928,391.39 and 486,648.33 is: 729,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,581.30 : 1,928,391.39 = 486,648.33 : x
  2. Step 2: Convert to fraction form
    1,285,581.30/1,928,391.39 = 486,648.33/x
  3. Step 3: Cross multiply
    1,285,581.30x = 1,928,391.39 × 486,648.33
  4. Step 4: Simplify right side
    1,285,581.30x = 938,448,449,529.88
  5. Step 5: Solve for x
    x = 938,448,449,529.88/1,285,581.30
  6. Step 6: Final answer
    x = 729,979.85

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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.