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Finding the Fourth Proportional to 447,900.60, 669,906.90 and 400,855.80

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Solution

The fourth proportional to 447,900.60, 669,906.90 and 400,855.80 is: 599,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,900.60 : 669,906.90 = 400,855.80 : x
  2. Step 2: Convert to fraction form
    447,900.60/669,906.90 = 400,855.80/x
  3. Step 3: Cross multiply
    447,900.60x = 669,906.90 × 400,855.80
  4. Step 4: Simplify right side
    447,900.60x = 268,536,066,325.02
  5. Step 5: Solve for x
    x = 268,536,066,325.02/447,900.60
  6. Step 6: Final answer
    x = 599,543.89

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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.