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Finding the Fourth Proportional to 667,697.33, 921,467.51 and 377,208.12

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Solution

The fourth proportional to 667,697.33, 921,467.51 and 377,208.12 is: 520,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,697.33 : 921,467.51 = 377,208.12 : x
  2. Step 2: Convert to fraction form
    667,697.33/921,467.51 = 377,208.12/x
  3. Step 3: Cross multiply
    667,697.33x = 921,467.51 × 377,208.12
  4. Step 4: Simplify right side
    667,697.33x = 347,585,025,202.14
  5. Step 5: Solve for x
    x = 347,585,025,202.14/667,697.33
  6. Step 6: Final answer
    x = 520,572.74

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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.