Home / 2,628,007.80-3,942,011.70-855,079.80

Finding the Fourth Proportional to 2,628,007.80, 3,942,011.70 and 855,079.80

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Solution

The fourth proportional to 2,628,007.80, 3,942,011.70 and 855,079.80 is: 1,282,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628,007.80 : 3,942,011.70 = 855,079.80 : x
  2. Step 2: Convert to fraction form
    2,628,007.80/3,942,011.70 = 855,079.80/x
  3. Step 3: Cross multiply
    2,628,007.80x = 3,942,011.70 × 855,079.80
  4. Step 4: Simplify right side
    2,628,007.80x = 3,370,734,576,033.66
  5. Step 5: Solve for x
    x = 3,370,734,576,033.66/2,628,007.80
  6. Step 6: Final answer
    x = 1,282,619.70

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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.