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Finding the Fourth Proportional to 644,846.72, 965,794.86 and 308,124.05

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Solution

The fourth proportional to 644,846.72, 965,794.86 and 308,124.05 is: 461,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,846.72 : 965,794.86 = 308,124.05 : x
  2. Step 2: Convert to fraction form
    644,846.72/965,794.86 = 308,124.05/x
  3. Step 3: Cross multiply
    644,846.72x = 965,794.86 × 308,124.05
  4. Step 4: Simplify right side
    644,846.72x = 297,584,618,903.41
  5. Step 5: Solve for x
    x = 297,584,618,903.41/644,846.72
  6. Step 6: Final answer
    x = 461,481.17

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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.