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Finding the Fourth Proportional to 633,042.72, 873,658.32 and 378,388.44

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Solution

The fourth proportional to 633,042.72, 873,658.32 and 378,388.44 is: 522,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,042.72 : 873,658.32 = 378,388.44 : x
  2. Step 2: Convert to fraction form
    633,042.72/873,658.32 = 378,388.44/x
  3. Step 3: Cross multiply
    633,042.72x = 873,658.32 × 378,388.44
  4. Step 4: Simplify right side
    633,042.72x = 330,582,208,797.82
  5. Step 5: Solve for x
    x = 330,582,208,797.82/633,042.72
  6. Step 6: Final answer
    x = 522,211.53

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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.