Home / 693,696.20-1,040,738.70-338,721.80

Finding the Fourth Proportional to 693,696.20, 1,040,738.70 and 338,721.80

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Solution

The fourth proportional to 693,696.20, 1,040,738.70 and 338,721.80 is: 508,177.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,696.20 : 1,040,738.70 = 338,721.80 : x
  2. Step 2: Convert to fraction form
    693,696.20/1,040,738.70 = 338,721.80/x
  3. Step 3: Cross multiply
    693,696.20x = 1,040,738.70 × 338,721.80
  4. Step 4: Simplify right side
    693,696.20x = 352,520,885,793.66
  5. Step 5: Solve for x
    x = 352,520,885,793.66/693,696.20
  6. Step 6: Final answer
    x = 508,177.62

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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.