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Finding the Fourth Proportional to 548,604.78, 757,226.75 and 319,206.39

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Solution

The fourth proportional to 548,604.78, 757,226.75 and 319,206.39 is: 440,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,604.78 : 757,226.75 = 319,206.39 : x
  2. Step 2: Convert to fraction form
    548,604.78/757,226.75 = 319,206.39/x
  3. Step 3: Cross multiply
    548,604.78x = 757,226.75 × 319,206.39
  4. Step 4: Simplify right side
    548,604.78x = 241,711,615,682.90
  5. Step 5: Solve for x
    x = 241,711,615,682.90/548,604.78
  6. Step 6: Final answer
    x = 440,593.35

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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.