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Finding the Fourth Proportional to 667,017.45, 920,483.02 and 361,093.75

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Solution

The fourth proportional to 667,017.45, 920,483.02 and 361,093.75 is: 498,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,017.45 : 920,483.02 = 361,093.75 : x
  2. Step 2: Convert to fraction form
    667,017.45/920,483.02 = 361,093.75/x
  3. Step 3: Cross multiply
    667,017.45x = 920,483.02 × 361,093.75
  4. Step 4: Simplify right side
    667,017.45x = 332,380,665,503.13
  5. Step 5: Solve for x
    x = 332,380,665,503.13/667,017.45
  6. Step 6: Final answer
    x = 498,308.80

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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.