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Finding the Fourth Proportional to 419,927.40, 629,891.10 and 419,927.40

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Solution

The fourth proportional to 419,927.40, 629,891.10 and 419,927.40 is: 629,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,927.40 : 629,891.10 = 419,927.40 : x
  2. Step 2: Convert to fraction form
    419,927.40/629,891.10 = 419,927.40/x
  3. Step 3: Cross multiply
    419,927.40x = 629,891.10 × 419,927.40
  4. Step 4: Simplify right side
    419,927.40x = 264,508,531,906.14
  5. Step 5: Solve for x
    x = 264,508,531,906.14/419,927.40
  6. Step 6: Final answer
    x = 629,891.10

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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.