Home / 1,261,408.44-1,890,469.78-512,579

Finding the Fourth Proportional to 1,261,408.44, 1,890,469.78 and 512,579

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Solution

The fourth proportional to 1,261,408.44, 1,890,469.78 and 512,579 is: 768,200.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,408.44 : 1,890,469.78 = 512,579 : x
  2. Step 2: Convert to fraction form
    1,261,408.44/1,890,469.78 = 512,579/x
  3. Step 3: Cross multiply
    1,261,408.44x = 1,890,469.78 × 512,579
  4. Step 4: Simplify right side
    1,261,408.44x = 969,015,109,362.62
  5. Step 5: Solve for x
    x = 969,015,109,362.62/1,261,408.44
  6. Step 6: Final answer
    x = 768,200.91

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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.