Home / 3,131,465.90-4,321,529.32-2,987,976.84

Finding the Fourth Proportional to 3,131,465.90, 4,321,529.32 and 2,987,976.84

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Solution

The fourth proportional to 3,131,465.90, 4,321,529.32 and 2,987,976.84 is: 4,123,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131,465.90 : 4,321,529.32 = 2,987,976.84 : x
  2. Step 2: Convert to fraction form
    3,131,465.90/4,321,529.32 = 2,987,976.84/x
  3. Step 3: Cross multiply
    3,131,465.90x = 4,321,529.32 × 2,987,976.84
  4. Step 4: Simplify right side
    3,131,465.90x = 12,912,629,521,540.95
  5. Step 5: Solve for x
    x = 12,912,629,521,540.95/3,131,465.90
  6. Step 6: Final answer
    x = 4,123,509.54

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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.