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Finding the Fourth Proportional to 978,553.84, 1,350,383 and 548,824.56

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Solution

The fourth proportional to 978,553.84, 1,350,383 and 548,824.56 is: 757,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,553.84 : 1,350,383 = 548,824.56 : x
  2. Step 2: Convert to fraction form
    978,553.84/1,350,383 = 548,824.56/x
  3. Step 3: Cross multiply
    978,553.84x = 1,350,383 × 548,824.56
  4. Step 4: Simplify right side
    978,553.84x = 741,123,355,806.48
  5. Step 5: Solve for x
    x = 741,123,355,806.48/978,553.84
  6. Step 6: Final answer
    x = 757,365.95

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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.