Home / 1,186,960.28-1,780,512.78-388,326.20

Finding the Fourth Proportional to 1,186,960.28, 1,780,512.78 and 388,326.20

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Solution

The fourth proportional to 1,186,960.28, 1,780,512.78 and 388,326.20 is: 582,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,960.28 : 1,780,512.78 = 388,326.20 : x
  2. Step 2: Convert to fraction form
    1,186,960.28/1,780,512.78 = 388,326.20/x
  3. Step 3: Cross multiply
    1,186,960.28x = 1,780,512.78 × 388,326.20
  4. Step 4: Simplify right side
    1,186,960.28x = 691,419,761,908.84
  5. Step 5: Solve for x
    x = 691,419,761,908.84/1,186,960.28
  6. Step 6: Final answer
    x = 582,512.97

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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.