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Finding the Fourth Proportional to 426,959.54, 640,544.44 and 300,846.09

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Solution

The fourth proportional to 426,959.54, 640,544.44 and 300,846.09 is: 451,343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,959.54 : 640,544.44 = 300,846.09 : x
  2. Step 2: Convert to fraction form
    426,959.54/640,544.44 = 300,846.09/x
  3. Step 3: Cross multiply
    426,959.54x = 640,544.44 × 300,846.09
  4. Step 4: Simplify right side
    426,959.54x = 192,705,290,245.24
  5. Step 5: Solve for x
    x = 192,705,290,245.24/426,959.54
  6. Step 6: Final answer
    x = 451,343.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.