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Finding the Fourth Proportional to 644,168.62, 888,978.28 and 372,227.50

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Solution

The fourth proportional to 644,168.62, 888,978.28 and 372,227.50 is: 513,688.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,168.62 : 888,978.28 = 372,227.50 : x
  2. Step 2: Convert to fraction form
    644,168.62/888,978.28 = 372,227.50/x
  3. Step 3: Cross multiply
    644,168.62x = 888,978.28 × 372,227.50
  4. Step 4: Simplify right side
    644,168.62x = 330,902,162,718.70
  5. Step 5: Solve for x
    x = 330,902,162,718.70/644,168.62
  6. Step 6: Final answer
    x = 513,688.73

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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.