Home / 2,191,687.20-3,288,145.20-1,069,792.80

Finding the Fourth Proportional to 2,191,687.20, 3,288,145.20 and 1,069,792.80

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Solution

The fourth proportional to 2,191,687.20, 3,288,145.20 and 1,069,792.80 is: 1,604,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191,687.20 : 3,288,145.20 = 1,069,792.80 : x
  2. Step 2: Convert to fraction form
    2,191,687.20/3,288,145.20 = 1,069,792.80/x
  3. Step 3: Cross multiply
    2,191,687.20x = 3,288,145.20 × 1,069,792.80
  4. Step 4: Simplify right side
    2,191,687.20x = 3,517,634,060,314.56
  5. Step 5: Solve for x
    x = 3,517,634,060,314.56/2,191,687.20
  6. Step 6: Final answer
    x = 1,604,989.10

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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.