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Finding the Fourth Proportional to 652,584.20, 978,836.81 and 388,028.27

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Solution

The fourth proportional to 652,584.20, 978,836.81 and 388,028.27 is: 582,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,584.20 : 978,836.81 = 388,028.27 : x
  2. Step 2: Convert to fraction form
    652,584.20/978,836.81 = 388,028.27/x
  3. Step 3: Cross multiply
    652,584.20x = 978,836.81 × 388,028.27
  4. Step 4: Simplify right side
    652,584.20x = 379,816,354,503.57
  5. Step 5: Solve for x
    x = 379,816,354,503.57/652,584.20
  6. Step 6: Final answer
    x = 582,018.93

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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.