Home / 1,188,321.24-1,639,872.15-644,469.03

Finding the Fourth Proportional to 1,188,321.24, 1,639,872.15 and 644,469.03

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Solution

The fourth proportional to 1,188,321.24, 1,639,872.15 and 644,469.03 is: 889,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,321.24 : 1,639,872.15 = 644,469.03 : x
  2. Step 2: Convert to fraction form
    1,188,321.24/1,639,872.15 = 644,469.03/x
  3. Step 3: Cross multiply
    1,188,321.24x = 1,639,872.15 × 644,469.03
  4. Step 4: Simplify right side
    1,188,321.24x = 1,056,846,813,834.51
  5. Step 5: Solve for x
    x = 1,056,846,813,834.51/1,188,321.24
  6. Step 6: Final answer
    x = 889,361.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.