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Finding the Fourth Proportional to 654,694.53, 903,408.03 and 368,153.79

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Solution

The fourth proportional to 654,694.53, 903,408.03 and 368,153.79 is: 508,012.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,694.53 : 903,408.03 = 368,153.79 : x
  2. Step 2: Convert to fraction form
    654,694.53/903,408.03 = 368,153.79/x
  3. Step 3: Cross multiply
    654,694.53x = 903,408.03 × 368,153.79
  4. Step 4: Simplify right side
    654,694.53x = 332,593,090,160.93
  5. Step 5: Solve for x
    x = 332,593,090,160.93/654,694.53
  6. Step 6: Final answer
    x = 508,012.63

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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.