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Finding the Fourth Proportional to 548,082.48, 756,348.12 and 321,684.24

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Solution

The fourth proportional to 548,082.48, 756,348.12 and 321,684.24 is: 443,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,082.48 : 756,348.12 = 321,684.24 : x
  2. Step 2: Convert to fraction form
    548,082.48/756,348.12 = 321,684.24/x
  3. Step 3: Cross multiply
    548,082.48x = 756,348.12 × 321,684.24
  4. Step 4: Simplify right side
    548,082.48x = 243,305,270,157.63
  5. Step 5: Solve for x
    x = 243,305,270,157.63/548,082.48
  6. Step 6: Final answer
    x = 443,920.90

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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.