Home / 3,969,709.90-5,479,433.15-3,155,358.58

Finding the Fourth Proportional to 3,969,709.90, 5,479,433.15 and 3,155,358.58

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Solution

The fourth proportional to 3,969,709.90, 5,479,433.15 and 3,155,358.58 is: 4,355,375.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,709.90 : 5,479,433.15 = 3,155,358.58 : x
  2. Step 2: Convert to fraction form
    3,969,709.90/5,479,433.15 = 3,155,358.58/x
  3. Step 3: Cross multiply
    3,969,709.90x = 5,479,433.15 × 3,155,358.58
  4. Step 4: Simplify right side
    3,969,709.90x = 17,289,576,403,388.93
  5. Step 5: Solve for x
    x = 17,289,576,403,388.93/3,969,709.90
  6. Step 6: Final answer
    x = 4,355,375.29

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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.