Home / 1,179,012.87-1,768,892.94-420,837.54

Finding the Fourth Proportional to 1,179,012.87, 1,768,892.94 and 420,837.54

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Solution

The fourth proportional to 1,179,012.87, 1,768,892.94 and 420,837.54 is: 631,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,012.87 : 1,768,892.94 = 420,837.54 : x
  2. Step 2: Convert to fraction form
    1,179,012.87/1,768,892.94 = 420,837.54/x
  3. Step 3: Cross multiply
    1,179,012.87x = 1,768,892.94 × 420,837.54
  4. Step 4: Simplify right side
    1,179,012.87x = 744,416,553,392.97
  5. Step 5: Solve for x
    x = 744,416,553,392.97/1,179,012.87
  6. Step 6: Final answer
    x = 631,389.68

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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.