Home / 1,821,311.20-2,731,966.80-1,289,432.80

Finding the Fourth Proportional to 1,821,311.20, 2,731,966.80 and 1,289,432.80

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Solution

The fourth proportional to 1,821,311.20, 2,731,966.80 and 1,289,432.80 is: 1,934,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,311.20 : 2,731,966.80 = 1,289,432.80 : x
  2. Step 2: Convert to fraction form
    1,821,311.20/2,731,966.80 = 1,289,432.80/x
  3. Step 3: Cross multiply
    1,821,311.20x = 2,731,966.80 × 1,289,432.80
  4. Step 4: Simplify right side
    1,821,311.20x = 3,522,687,600,431.04
  5. Step 5: Solve for x
    x = 3,522,687,600,431.04/1,821,311.20
  6. Step 6: Final answer
    x = 1,934,149.20

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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.