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Finding the Fourth Proportional to 548,085.44, 756,344.56 and 306,396.42

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Solution

The fourth proportional to 548,085.44, 756,344.56 and 306,396.42 is: 422,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,085.44 : 756,344.56 = 306,396.42 : x
  2. Step 2: Convert to fraction form
    548,085.44/756,344.56 = 306,396.42/x
  3. Step 3: Cross multiply
    548,085.44x = 756,344.56 × 306,396.42
  4. Step 4: Simplify right side
    548,085.44x = 231,741,267,558.86
  5. Step 5: Solve for x
    x = 231,741,267,558.86/548,085.44
  6. Step 6: Final answer
    x = 422,819.60

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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.