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Finding the Fourth Proportional to 491,469.39, 678,249.59 and 276,623.37

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Solution

The fourth proportional to 491,469.39, 678,249.59 and 276,623.37 is: 381,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,469.39 : 678,249.59 = 276,623.37 : x
  2. Step 2: Convert to fraction form
    491,469.39/678,249.59 = 276,623.37/x
  3. Step 3: Cross multiply
    491,469.39x = 678,249.59 × 276,623.37
  4. Step 4: Simplify right side
    491,469.39x = 187,619,685,903.80
  5. Step 5: Solve for x
    x = 187,619,685,903.80/491,469.39
  6. Step 6: Final answer
    x = 381,752.54

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1.5x scale

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.