Home / 1,214,687.78-1,821,844.85-405,086.37

Finding the Fourth Proportional to 1,214,687.78, 1,821,844.85 and 405,086.37

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Solution

The fourth proportional to 1,214,687.78, 1,821,844.85 and 405,086.37 is: 607,567.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,687.78 : 1,821,844.85 = 405,086.37 : x
  2. Step 2: Convert to fraction form
    1,214,687.78/1,821,844.85 = 405,086.37/x
  3. Step 3: Cross multiply
    1,214,687.78x = 1,821,844.85 × 405,086.37
  4. Step 4: Simplify right side
    1,214,687.78x = 738,004,508,132.35
  5. Step 5: Solve for x
    x = 738,004,508,132.35/1,214,687.78
  6. Step 6: Final answer
    x = 607,567.25

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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.