Home / 725,379.04-1,087,401.36-388,651.36

Finding the Fourth Proportional to 725,379.04, 1,087,401.36 and 388,651.36

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Solution

The fourth proportional to 725,379.04, 1,087,401.36 and 388,651.36 is: 582,619.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,379.04 : 1,087,401.36 = 388,651.36 : x
  2. Step 2: Convert to fraction form
    725,379.04/1,087,401.36 = 388,651.36/x
  3. Step 3: Cross multiply
    725,379.04x = 1,087,401.36 × 388,651.36
  4. Step 4: Simplify right side
    725,379.04x = 422,620,017,429.85
  5. Step 5: Solve for x
    x = 422,620,017,429.85/725,379.04
  6. Step 6: Final answer
    x = 582,619.56

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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.