Home / 3,120,129.40-4,677,861.30-1,321,540.60

Finding the Fourth Proportional to 3,120,129.40, 4,677,861.30 and 1,321,540.60

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Solution

The fourth proportional to 3,120,129.40, 4,677,861.30 and 1,321,540.60 is: 1,981,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,129.40 : 4,677,861.30 = 1,321,540.60 : x
  2. Step 2: Convert to fraction form
    3,120,129.40/4,677,861.30 = 1,321,540.60/x
  3. Step 3: Cross multiply
    3,120,129.40x = 4,677,861.30 × 1,321,540.60
  4. Step 4: Simplify right side
    3,120,129.40x = 6,181,983,629,118.78
  5. Step 5: Solve for x
    x = 6,181,983,629,118.78/3,120,129.40
  6. Step 6: Final answer
    x = 1,981,322.84

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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.