Home / 2,145,803.20-3,218,704.80-1,909,412.80

Finding the Fourth Proportional to 2,145,803.20, 3,218,704.80 and 1,909,412.80

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Solution

The fourth proportional to 2,145,803.20, 3,218,704.80 and 1,909,412.80 is: 2,864,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145,803.20 : 3,218,704.80 = 1,909,412.80 : x
  2. Step 2: Convert to fraction form
    2,145,803.20/3,218,704.80 = 1,909,412.80/x
  3. Step 3: Cross multiply
    2,145,803.20x = 3,218,704.80 × 1,909,412.80
  4. Step 4: Simplify right side
    2,145,803.20x = 6,145,836,144,541.44
  5. Step 5: Solve for x
    x = 6,145,836,144,541.44/2,145,803.20
  6. Step 6: Final answer
    x = 2,864,119.20

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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.