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Finding the Fourth Proportional to 633,375.53, 874,064.39 and 378,726.72

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Solution

The fourth proportional to 633,375.53, 874,064.39 and 378,726.72 is: 522,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,375.53 : 874,064.39 = 378,726.72 : x
  2. Step 2: Convert to fraction form
    633,375.53/874,064.39 = 378,726.72/x
  3. Step 3: Cross multiply
    633,375.53x = 874,064.39 × 378,726.72
  4. Step 4: Simplify right side
    633,375.53x = 331,031,540,440.32
  5. Step 5: Solve for x
    x = 331,031,540,440.32/633,375.53
  6. Step 6: Final answer
    x = 522,646.56

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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.