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Finding the Fourth Proportional to 419,974.40, 629,961.60 and 367,486.40

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Solution

The fourth proportional to 419,974.40, 629,961.60 and 367,486.40 is: 551,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,974.40 : 629,961.60 = 367,486.40 : x
  2. Step 2: Convert to fraction form
    419,974.40/629,961.60 = 367,486.40/x
  3. Step 3: Cross multiply
    419,974.40x = 629,961.60 × 367,486.40
  4. Step 4: Simplify right side
    419,974.40x = 231,502,320,522.24
  5. Step 5: Solve for x
    x = 231,502,320,522.24/419,974.40
  6. Step 6: Final answer
    x = 551,229.60

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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.