Home / 3,120,709.80-4,678,472.70-1,324,972.20

Finding the Fourth Proportional to 3,120,709.80, 4,678,472.70 and 1,324,972.20

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Solution

The fourth proportional to 3,120,709.80, 4,678,472.70 and 1,324,972.20 is: 1,986,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,709.80 : 4,678,472.70 = 1,324,972.20 : x
  2. Step 2: Convert to fraction form
    3,120,709.80/4,678,472.70 = 1,324,972.20/x
  3. Step 3: Cross multiply
    3,120,709.80x = 4,678,472.70 × 1,324,972.20
  4. Step 4: Simplify right side
    3,120,709.80x = 6,198,846,265,958.94
  5. Step 5: Solve for x
    x = 6,198,846,265,958.94/3,120,709.80
  6. Step 6: Final answer
    x = 1,986,357.80

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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.