Home / 2,679,419.20-4,019,128.80-2,380,820.80

Finding the Fourth Proportional to 2,679,419.20, 4,019,128.80 and 2,380,820.80

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Solution

The fourth proportional to 2,679,419.20, 4,019,128.80 and 2,380,820.80 is: 3,571,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679,419.20 : 4,019,128.80 = 2,380,820.80 : x
  2. Step 2: Convert to fraction form
    2,679,419.20/4,019,128.80 = 2,380,820.80/x
  3. Step 3: Cross multiply
    2,679,419.20x = 4,019,128.80 × 2,380,820.80
  4. Step 4: Simplify right side
    2,679,419.20x = 9,568,825,444,919.04
  5. Step 5: Solve for x
    x = 9,568,825,444,919.04/2,679,419.20
  6. Step 6: Final answer
    x = 3,571,231.20

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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.