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Finding the Fourth Proportional to 548,105.72, 756,523.04 and 438,783.08

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Solution

The fourth proportional to 548,105.72, 756,523.04 and 438,783.08 is: 605,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,105.72 : 756,523.04 = 438,783.08 : x
  2. Step 2: Convert to fraction form
    548,105.72/756,523.04 = 438,783.08/x
  3. Step 3: Cross multiply
    548,105.72x = 756,523.04 × 438,783.08
  4. Step 4: Simplify right side
    548,105.72x = 331,949,509,582.16
  5. Step 5: Solve for x
    x = 331,949,509,582.16/548,105.72
  6. Step 6: Final answer
    x = 605,630.44

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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.