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Finding the Fourth Proportional to 667,748.56, 921,203.40 and 441,709.52

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Solution

The fourth proportional to 667,748.56, 921,203.40 and 441,709.52 is: 609,367.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,748.56 : 921,203.40 = 441,709.52 : x
  2. Step 2: Convert to fraction form
    667,748.56/921,203.40 = 441,709.52/x
  3. Step 3: Cross multiply
    667,748.56x = 921,203.40 × 441,709.52
  4. Step 4: Simplify right side
    667,748.56x = 406,904,311,636.37
  5. Step 5: Solve for x
    x = 406,904,311,636.37/667,748.56
  6. Step 6: Final answer
    x = 609,367.56

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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.