Home / 3,939,005.25-5,435,821.99-2,128,169.25

Finding the Fourth Proportional to 3,939,005.25, 5,435,821.99 and 2,128,169.25

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Solution

The fourth proportional to 3,939,005.25, 5,435,821.99 and 2,128,169.25 is: 2,936,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,005.25 : 5,435,821.99 = 2,128,169.25 : x
  2. Step 2: Convert to fraction form
    3,939,005.25/5,435,821.99 = 2,128,169.25/x
  3. Step 3: Cross multiply
    3,939,005.25x = 5,435,821.99 × 2,128,169.25
  4. Step 4: Simplify right side
    3,939,005.25x = 11,568,349,215,860.94
  5. Step 5: Solve for x
    x = 11,568,349,215,860.94/3,939,005.25
  6. Step 6: Final answer
    x = 2,936,870.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.