Home / 1,188,976.60-1,640,735.76-679,711.78

Finding the Fourth Proportional to 1,188,976.60, 1,640,735.76 and 679,711.78

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Solution

The fourth proportional to 1,188,976.60, 1,640,735.76 and 679,711.78 is: 937,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,976.60 : 1,640,735.76 = 679,711.78 : x
  2. Step 2: Convert to fraction form
    1,188,976.60/1,640,735.76 = 679,711.78/x
  3. Step 3: Cross multiply
    1,188,976.60x = 1,640,735.76 × 679,711.78
  4. Step 4: Simplify right side
    1,188,976.60x = 1,115,227,423,939.25
  5. Step 5: Solve for x
    x = 1,115,227,423,939.25/1,188,976.60
  6. Step 6: Final answer
    x = 937,972.56

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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.