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Finding the Fourth Proportional to 667,174.72, 920,699.75 and 361,251.01

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Solution

The fourth proportional to 667,174.72, 920,699.75 and 361,251.01 is: 498,525.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,174.72 : 920,699.75 = 361,251.01 : x
  2. Step 2: Convert to fraction form
    667,174.72/920,699.75 = 361,251.01/x
  3. Step 3: Cross multiply
    667,174.72x = 920,699.75 × 361,251.01
  4. Step 4: Simplify right side
    667,174.72x = 332,603,712,787.99
  5. Step 5: Solve for x
    x = 332,603,712,787.99/667,174.72
  6. Step 6: Final answer
    x = 498,525.65

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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.