Home / 1,131,120.60-1,560,906.78-621,819.30

Finding the Fourth Proportional to 1,131,120.60, 1,560,906.78 and 621,819.30

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Solution

The fourth proportional to 1,131,120.60, 1,560,906.78 and 621,819.30 is: 858,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,120.60 : 1,560,906.78 = 621,819.30 : x
  2. Step 2: Convert to fraction form
    1,131,120.60/1,560,906.78 = 621,819.30/x
  3. Step 3: Cross multiply
    1,131,120.60x = 1,560,906.78 × 621,819.30
  4. Step 4: Simplify right side
    1,131,120.60x = 970,601,961,304.85
  5. Step 5: Solve for x
    x = 970,601,961,304.85/1,131,120.60
  6. Step 6: Final answer
    x = 858,088.84

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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.