Home / 1,380,310.20-2,065,799.70-1,212,348.60

Finding the Fourth Proportional to 1,380,310.20, 2,065,799.70 and 1,212,348.60

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Solution

The fourth proportional to 1,380,310.20, 2,065,799.70 and 1,212,348.60 is: 1,814,425.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,310.20 : 2,065,799.70 = 1,212,348.60 : x
  2. Step 2: Convert to fraction form
    1,380,310.20/2,065,799.70 = 1,212,348.60/x
  3. Step 3: Cross multiply
    1,380,310.20x = 2,065,799.70 × 1,212,348.60
  4. Step 4: Simplify right side
    1,380,310.20x = 2,504,469,374,175.42
  5. Step 5: Solve for x
    x = 2,504,469,374,175.42/1,380,310.20
  6. Step 6: Final answer
    x = 1,814,425.03

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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.