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Finding the Fourth Proportional to 667,726.56, 921,486.24 and 365,920.56

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Solution

The fourth proportional to 667,726.56, 921,486.24 and 365,920.56 is: 504,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,726.56 : 921,486.24 = 365,920.56 : x
  2. Step 2: Convert to fraction form
    667,726.56/921,486.24 = 365,920.56/x
  3. Step 3: Cross multiply
    667,726.56x = 921,486.24 × 365,920.56
  4. Step 4: Simplify right side
    667,726.56x = 337,190,760,973.09
  5. Step 5: Solve for x
    x = 337,190,760,973.09/667,726.56
  6. Step 6: Final answer
    x = 504,983.30

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1.5x scale

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.