Home / 3,485,278.40-5,220,919.20-1,987,620.80

Finding the Fourth Proportional to 3,485,278.40, 5,220,919.20 and 1,987,620.80

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Solution

The fourth proportional to 3,485,278.40, 5,220,919.20 and 1,987,620.80 is: 2,977,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485,278.40 : 5,220,919.20 = 1,987,620.80 : x
  2. Step 2: Convert to fraction form
    3,485,278.40/5,220,919.20 = 1,987,620.80/x
  3. Step 3: Cross multiply
    3,485,278.40x = 5,220,919.20 × 1,987,620.80
  4. Step 4: Simplify right side
    3,485,278.40x = 10,377,207,597,039.36
  5. Step 5: Solve for x
    x = 10,377,207,597,039.36/3,485,278.40
  6. Step 6: Final answer
    x = 2,977,440.08

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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.