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Finding the Fourth Proportional to 548,121.66, 756,410.92 and 306,414.42

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Solution

The fourth proportional to 548,121.66, 756,410.92 and 306,414.42 is: 422,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,121.66 : 756,410.92 = 306,414.42 : x
  2. Step 2: Convert to fraction form
    548,121.66/756,410.92 = 306,414.42/x
  3. Step 3: Cross multiply
    548,121.66x = 756,410.92 × 306,414.42
  4. Step 4: Simplify right side
    548,121.66x = 231,775,209,551.41
  5. Step 5: Solve for x
    x = 231,775,209,551.41/548,121.66
  6. Step 6: Final answer
    x = 422,853.59

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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.