Home / 1,379,349.27-2,069,321.70-419,879.90

Finding the Fourth Proportional to 1,379,349.27, 2,069,321.70 and 419,879.90

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Solution

The fourth proportional to 1,379,349.27, 2,069,321.70 and 419,879.90 is: 629,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,349.27 : 2,069,321.70 = 419,879.90 : x
  2. Step 2: Convert to fraction form
    1,379,349.27/2,069,321.70 = 419,879.90/x
  3. Step 3: Cross multiply
    1,379,349.27x = 2,069,321.70 × 419,879.90
  4. Step 4: Simplify right side
    1,379,349.27x = 868,866,583,290.53
  5. Step 5: Solve for x
    x = 868,866,583,290.53/1,379,349.27
  6. Step 6: Final answer
    x = 629,910.50

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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.