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Finding the Fourth Proportional to 548,449.54, 756,898.70 and 306,754.45

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Solution

The fourth proportional to 548,449.54, 756,898.70 and 306,754.45 is: 423,342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,449.54 : 756,898.70 = 306,754.45 : x
  2. Step 2: Convert to fraction form
    548,449.54/756,898.70 = 306,754.45/x
  3. Step 3: Cross multiply
    548,449.54x = 756,898.70 × 306,754.45
  4. Step 4: Simplify right side
    548,449.54x = 232,182,040,998.20
  5. Step 5: Solve for x
    x = 232,182,040,998.20/548,449.54
  6. Step 6: Final answer
    x = 423,342.58

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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.