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Finding the Fourth Proportional to 436,213.60, 654,320.37 and 120,662.30

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Solution

The fourth proportional to 436,213.60, 654,320.37 and 120,662.30 is: 180,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,213.60 : 654,320.37 = 120,662.30 : x
  2. Step 2: Convert to fraction form
    436,213.60/654,320.37 = 120,662.30/x
  3. Step 3: Cross multiply
    436,213.60x = 654,320.37 × 120,662.30
  4. Step 4: Simplify right side
    436,213.60x = 78,951,800,781.05
  5. Step 5: Solve for x
    x = 78,951,800,781.05/436,213.60
  6. Step 6: Final answer
    x = 180,993.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.