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Finding the Fourth Proportional to 548,076.28, 756,441.52 and 318,704.54

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Solution

The fourth proportional to 548,076.28, 756,441.52 and 318,704.54 is: 439,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,076.28 : 756,441.52 = 318,704.54 : x
  2. Step 2: Convert to fraction form
    548,076.28/756,441.52 = 318,704.54/x
  3. Step 3: Cross multiply
    548,076.28x = 756,441.52 × 318,704.54
  4. Step 4: Simplify right side
    548,076.28x = 241,081,346,668.50
  5. Step 5: Solve for x
    x = 241,081,346,668.50/548,076.28
  6. Step 6: Final answer
    x = 439,868.24

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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.