Home / 548,107.20-756,392.04-306,399.60

Finding the Fourth Proportional to 548,107.20, 756,392.04 and 306,399.60

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Solution

The fourth proportional to 548,107.20, 756,392.04 and 306,399.60 is: 422,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,107.20 : 756,392.04 = 306,399.60 : x
  2. Step 2: Convert to fraction form
    548,107.20/756,392.04 = 306,399.60/x
  3. Step 3: Cross multiply
    548,107.20x = 756,392.04 × 306,399.60
  4. Step 4: Simplify right side
    548,107.20x = 231,758,218,499.18
  5. Step 5: Solve for x
    x = 231,758,218,499.18/548,107.20
  6. Step 6: Final answer
    x = 422,833.74

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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.