Home / 643,517.46-888,109.24-353,185.14

Finding the Fourth Proportional to 643,517.46, 888,109.24 and 353,185.14

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Solution

The fourth proportional to 643,517.46, 888,109.24 and 353,185.14 is: 487,425.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,517.46 : 888,109.24 = 353,185.14 : x
  2. Step 2: Convert to fraction form
    643,517.46/888,109.24 = 353,185.14/x
  3. Step 3: Cross multiply
    643,517.46x = 888,109.24 × 353,185.14
  4. Step 4: Simplify right side
    643,517.46x = 313,666,986,264.69
  5. Step 5: Solve for x
    x = 313,666,986,264.69/643,517.46
  6. Step 6: Final answer
    x = 487,425.76

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1.5x scale

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.