Home / 826,736-1,239,789.12-489,871.68

Finding the Fourth Proportional to 826,736, 1,239,789.12 and 489,871.68

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Solution

The fourth proportional to 826,736, 1,239,789.12 and 489,871.68 is: 734,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,736 : 1,239,789.12 = 489,871.68 : x
  2. Step 2: Convert to fraction form
    826,736/1,239,789.12 = 489,871.68/x
  3. Step 3: Cross multiply
    826,736x = 1,239,789.12 × 489,871.68
  4. Step 4: Simplify right side
    826,736x = 607,337,579,060.12
  5. Step 5: Solve for x
    x = 607,337,579,060.12/826,736
  6. Step 6: Final answer
    x = 734,620.94

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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.