Home / 1,178,997.30-1,768,869.62-420,821.97

Finding the Fourth Proportional to 1,178,997.30, 1,768,869.62 and 420,821.97

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Solution

The fourth proportional to 1,178,997.30, 1,768,869.62 and 420,821.97 is: 631,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,997.30 : 1,768,869.62 = 420,821.97 : x
  2. Step 2: Convert to fraction form
    1,178,997.30/1,768,869.62 = 420,821.97/x
  3. Step 3: Cross multiply
    1,178,997.30x = 1,768,869.62 × 420,821.97
  4. Step 4: Simplify right side
    1,178,997.30x = 744,379,196,057.44
  5. Step 5: Solve for x
    x = 744,379,196,057.44/1,178,997.30
  6. Step 6: Final answer
    x = 631,366.33

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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.