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Finding the Fourth Proportional to 667,448.56, 921,101.96 and 365,642.48

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Solution

The fourth proportional to 667,448.56, 921,101.96 and 365,642.48 is: 504,599.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,448.56 : 921,101.96 = 365,642.48 : x
  2. Step 2: Convert to fraction form
    667,448.56/921,101.96 = 365,642.48/x
  3. Step 3: Cross multiply
    667,448.56x = 921,101.96 × 365,642.48
  4. Step 4: Simplify right side
    667,448.56x = 336,794,004,987.26
  5. Step 5: Solve for x
    x = 336,794,004,987.26/667,448.56
  6. Step 6: Final answer
    x = 504,599.19

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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.