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Finding the Fourth Proportional to 667,778.56, 921,244.80 and 441,739.52

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Solution

The fourth proportional to 667,778.56, 921,244.80 and 441,739.52 is: 609,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,778.56 : 921,244.80 = 441,739.52 : x
  2. Step 2: Convert to fraction form
    667,778.56/921,244.80 = 441,739.52/x
  3. Step 3: Cross multiply
    667,778.56x = 921,244.80 × 441,739.52
  4. Step 4: Simplify right side
    667,778.56x = 406,950,235,754.50
  5. Step 5: Solve for x
    x = 406,950,235,754.50/667,778.56
  6. Step 6: Final answer
    x = 609,408.96

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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.