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Finding the Fourth Proportional to 548,082.56, 756,450.20 and 318,710.80

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Solution

The fourth proportional to 548,082.56, 756,450.20 and 318,710.80 is: 439,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,082.56 : 756,450.20 = 318,710.80 : x
  2. Step 2: Convert to fraction form
    548,082.56/756,450.20 = 318,710.80/x
  3. Step 3: Cross multiply
    548,082.56x = 756,450.20 × 318,710.80
  4. Step 4: Simplify right side
    548,082.56x = 241,088,848,402.16
  5. Step 5: Solve for x
    x = 241,088,848,402.16/548,082.56
  6. Step 6: Final answer
    x = 439,876.88

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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.