Home / 1,290,658.92-1,781,152.52-709,906.62

Finding the Fourth Proportional to 1,290,658.92, 1,781,152.52 and 709,906.62

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Solution

The fourth proportional to 1,290,658.92, 1,781,152.52 and 709,906.62 is: 979,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,658.92 : 1,781,152.52 = 709,906.62 : x
  2. Step 2: Convert to fraction form
    1,290,658.92/1,781,152.52 = 709,906.62/x
  3. Step 3: Cross multiply
    1,290,658.92x = 1,781,152.52 × 709,906.62
  4. Step 4: Simplify right side
    1,290,658.92x = 1,264,451,965,177.68
  5. Step 5: Solve for x
    x = 1,264,451,965,177.68/1,290,658.92
  6. Step 6: Final answer
    x = 979,694.90

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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.