Home / 643,537.26-888,105.27-388,839.18

Finding the Fourth Proportional to 643,537.26, 888,105.27 and 388,839.18

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Solution

The fourth proportional to 643,537.26, 888,105.27 and 388,839.18 is: 536,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,537.26 : 888,105.27 = 388,839.18 : x
  2. Step 2: Convert to fraction form
    643,537.26/888,105.27 = 388,839.18/x
  3. Step 3: Cross multiply
    643,537.26x = 888,105.27 × 388,839.18
  4. Step 4: Simplify right side
    643,537.26x = 345,330,124,940.48
  5. Step 5: Solve for x
    x = 345,330,124,940.48/643,537.26
  6. Step 6: Final answer
    x = 536,612.48

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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.