Home / 1,380,286.20-2,065,763.70-1,212,324.60

Finding the Fourth Proportional to 1,380,286.20, 2,065,763.70 and 1,212,324.60

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Solution

The fourth proportional to 1,380,286.20, 2,065,763.70 and 1,212,324.60 is: 1,814,389.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,286.20 : 2,065,763.70 = 1,212,324.60 : x
  2. Step 2: Convert to fraction form
    1,380,286.20/2,065,763.70 = 1,212,324.60/x
  3. Step 3: Cross multiply
    1,380,286.20x = 2,065,763.70 × 1,212,324.60
  4. Step 4: Simplify right side
    1,380,286.20x = 2,504,376,151,297.02
  5. Step 5: Solve for x
    x = 2,504,376,151,297.02/1,380,286.20
  6. Step 6: Final answer
    x = 1,814,389.04

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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.