Home / 1,394,136.70-2,091,205.05-1,078,819.90

Finding the Fourth Proportional to 1,394,136.70, 2,091,205.05 and 1,078,819.90

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Solution

The fourth proportional to 1,394,136.70, 2,091,205.05 and 1,078,819.90 is: 1,618,229.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,136.70 : 2,091,205.05 = 1,078,819.90 : x
  2. Step 2: Convert to fraction form
    1,394,136.70/2,091,205.05 = 1,078,819.90/x
  3. Step 3: Cross multiply
    1,394,136.70x = 2,091,205.05 × 1,078,819.90
  4. Step 4: Simplify right side
    1,394,136.70x = 2,256,033,622,920.49
  5. Step 5: Solve for x
    x = 2,256,033,622,920.49/1,394,136.70
  6. Step 6: Final answer
    x = 1,618,229.85

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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.