Home / 876,405.92-1,311,149.97-663,786.45

Finding the Fourth Proportional to 876,405.92, 1,311,149.97 and 663,786.45

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Solution

The fourth proportional to 876,405.92, 1,311,149.97 and 663,786.45 is: 993,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,405.92 : 1,311,149.97 = 663,786.45 : x
  2. Step 2: Convert to fraction form
    876,405.92/1,311,149.97 = 663,786.45/x
  3. Step 3: Cross multiply
    876,405.92x = 1,311,149.97 × 663,786.45
  4. Step 4: Simplify right side
    876,405.92x = 870,323,584,003.91
  5. Step 5: Solve for x
    x = 870,323,584,003.91/876,405.92
  6. Step 6: Final answer
    x = 993,059.92

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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.