Home / 2,120,650.89-3,181,271.78-681,377.68

Finding the Fourth Proportional to 2,120,650.89, 3,181,271.78 and 681,377.68

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Solution

The fourth proportional to 2,120,650.89, 3,181,271.78 and 681,377.68 is: 1,022,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,650.89 : 3,181,271.78 = 681,377.68 : x
  2. Step 2: Convert to fraction form
    2,120,650.89/3,181,271.78 = 681,377.68/x
  3. Step 3: Cross multiply
    2,120,650.89x = 3,181,271.78 × 681,377.68
  4. Step 4: Simplify right side
    2,120,650.89x = 2,167,647,584,905.87
  5. Step 5: Solve for x
    x = 2,167,647,584,905.87/2,120,650.89
  6. Step 6: Final answer
    x = 1,022,161.45

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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.