Home / 12,455,190.80-18,682,786.20-3,479,728.40

Finding the Fourth Proportional to 12,455,190.80, 18,682,786.20 and 3,479,728.40

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Solution

The fourth proportional to 12,455,190.80, 18,682,786.20 and 3,479,728.40 is: 5,219,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,190.80 : 18,682,786.20 = 3,479,728.40 : x
  2. Step 2: Convert to fraction form
    12,455,190.80/18,682,786.20 = 3,479,728.40/x
  3. Step 3: Cross multiply
    12,455,190.80x = 18,682,786.20 × 3,479,728.40
  4. Step 4: Simplify right side
    12,455,190.80x = 65,011,021,731,268.08
  5. Step 5: Solve for x
    x = 65,011,021,731,268.08/12,455,190.80
  6. Step 6: Final answer
    x = 5,219,592.60

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Double scale
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Similar ratio
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1.5x scale

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.