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Finding the Fourth Proportional to 667,393.44, 921,059.70 and 377,058.36

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Solution

The fourth proportional to 667,393.44, 921,059.70 and 377,058.36 is: 520,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,393.44 : 921,059.70 = 377,058.36 : x
  2. Step 2: Convert to fraction form
    667,393.44/921,059.70 = 377,058.36/x
  3. Step 3: Cross multiply
    667,393.44x = 921,059.70 × 377,058.36
  4. Step 4: Simplify right side
    667,393.44x = 347,293,259,944.09
  5. Step 5: Solve for x
    x = 347,293,259,944.09/667,393.44
  6. Step 6: Final answer
    x = 520,372.60

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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.