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Finding the Fourth Proportional to 667,232.69, 920,788.63 and 361,315.94

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Solution

The fourth proportional to 667,232.69, 920,788.63 and 361,315.94 is: 498,620.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,232.69 : 920,788.63 = 361,315.94 : x
  2. Step 2: Convert to fraction form
    667,232.69/920,788.63 = 361,315.94/x
  3. Step 3: Cross multiply
    667,232.69x = 920,788.63 × 361,315.94
  4. Step 4: Simplify right side
    667,232.69x = 332,695,603,882.53
  5. Step 5: Solve for x
    x = 332,695,603,882.53/667,232.69
  6. Step 6: Final answer
    x = 498,620.06

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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.