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Finding the Fourth Proportional to 667,574.44, 921,214.02 and 365,715.88

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Solution

The fourth proportional to 667,574.44, 921,214.02 and 365,715.88 is: 504,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,574.44 : 921,214.02 = 365,715.88 : x
  2. Step 2: Convert to fraction form
    667,574.44/921,214.02 = 365,715.88/x
  3. Step 3: Cross multiply
    667,574.44x = 921,214.02 × 365,715.88
  4. Step 4: Simplify right side
    667,574.44x = 336,902,595,992.64
  5. Step 5: Solve for x
    x = 336,902,595,992.64/667,574.44
  6. Step 6: Final answer
    x = 504,666.71

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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.