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Finding the Fourth Proportional to 667,893.43, 921,690.57 and 361,977.24

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Solution

The fourth proportional to 667,893.43, 921,690.57 and 361,977.24 is: 499,527.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,893.43 : 921,690.57 = 361,977.24 : x
  2. Step 2: Convert to fraction form
    667,893.43/921,690.57 = 361,977.24/x
  3. Step 3: Cross multiply
    667,893.43x = 921,690.57 × 361,977.24
  4. Step 4: Simplify right side
    667,893.43x = 333,631,008,662.63
  5. Step 5: Solve for x
    x = 333,631,008,662.63/667,893.43
  6. Step 6: Final answer
    x = 499,527.31

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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.