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Finding the Fourth Proportional to 667,998, 921,895.56 and 366,250.32

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Solution

The fourth proportional to 667,998, 921,895.56 and 366,250.32 is: 505,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,998 : 921,895.56 = 366,250.32 : x
  2. Step 2: Convert to fraction form
    667,998/921,895.56 = 366,250.32/x
  3. Step 3: Cross multiply
    667,998x = 921,895.56 × 366,250.32
  4. Step 4: Simplify right side
    667,998x = 337,644,543,856.58
  5. Step 5: Solve for x
    x = 337,644,543,856.58/667,998
  6. Step 6: Final answer
    x = 505,457.42

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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.