Home / 1,102,867.76-1,521,778.54-689,355.60

Finding the Fourth Proportional to 1,102,867.76, 1,521,778.54 and 689,355.60

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Solution

The fourth proportional to 1,102,867.76, 1,521,778.54 and 689,355.60 is: 951,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,867.76 : 1,521,778.54 = 689,355.60 : x
  2. Step 2: Convert to fraction form
    1,102,867.76/1,521,778.54 = 689,355.60/x
  3. Step 3: Cross multiply
    1,102,867.76x = 1,521,778.54 × 689,355.60
  4. Step 4: Simplify right side
    1,102,867.76x = 1,049,046,558,508.82
  5. Step 5: Solve for x
    x = 1,049,046,558,508.82/1,102,867.76
  6. Step 6: Final answer
    x = 951,198.86

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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.