Home / 1,379,241.72-2,068,940.30-419,728.53

Finding the Fourth Proportional to 1,379,241.72, 2,068,940.30 and 419,728.53

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Solution

The fourth proportional to 1,379,241.72, 2,068,940.30 and 419,728.53 is: 629,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,241.72 : 2,068,940.30 = 419,728.53 : x
  2. Step 2: Convert to fraction form
    1,379,241.72/2,068,940.30 = 419,728.53/x
  3. Step 3: Cross multiply
    1,379,241.72x = 2,068,940.30 × 419,728.53
  4. Step 4: Simplify right side
    1,379,241.72x = 868,393,268,678.12
  5. Step 5: Solve for x
    x = 868,393,268,678.12/1,379,241.72
  6. Step 6: Final answer
    x = 629,616.45

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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.