Home / 6,840,138.30-9,438,561.09-3,940,467.90

Finding the Fourth Proportional to 6,840,138.30, 9,438,561.09 and 3,940,467.90

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Solution

The fourth proportional to 6,840,138.30, 9,438,561.09 and 3,940,467.90 is: 5,437,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840,138.30 : 9,438,561.09 = 3,940,467.90 : x
  2. Step 2: Convert to fraction form
    6,840,138.30/9,438,561.09 = 3,940,467.90/x
  3. Step 3: Cross multiply
    6,840,138.30x = 9,438,561.09 × 3,940,467.90
  4. Step 4: Simplify right side
    6,840,138.30x = 37,192,346,997,334.01
  5. Step 5: Solve for x
    x = 37,192,346,997,334.01/6,840,138.30
  6. Step 6: Final answer
    x = 5,437,367.69

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1.5x scale

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.