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Finding the Fourth Proportional to 481,780.12, 664,838.92 and 277,839.64

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Solution

The fourth proportional to 481,780.12, 664,838.92 and 277,839.64 is: 383,408.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,780.12 : 664,838.92 = 277,839.64 : x
  2. Step 2: Convert to fraction form
    481,780.12/664,838.92 = 277,839.64/x
  3. Step 3: Cross multiply
    481,780.12x = 664,838.92 × 277,839.64
  4. Step 4: Simplify right side
    481,780.12x = 184,718,606,190.79
  5. Step 5: Solve for x
    x = 184,718,606,190.79/481,780.12
  6. Step 6: Final answer
    x = 383,408.53

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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.