Home / 1,214,268.82-1,821,349.11-415,621.78

Finding the Fourth Proportional to 1,214,268.82, 1,821,349.11 and 415,621.78

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Solution

The fourth proportional to 1,214,268.82, 1,821,349.11 and 415,621.78 is: 623,414.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,268.82 : 1,821,349.11 = 415,621.78 : x
  2. Step 2: Convert to fraction form
    1,214,268.82/1,821,349.11 = 415,621.78/x
  3. Step 3: Cross multiply
    1,214,268.82x = 1,821,349.11 × 415,621.78
  4. Step 4: Simplify right side
    1,214,268.82x = 756,992,359,099.62
  5. Step 5: Solve for x
    x = 756,992,359,099.62/1,214,268.82
  6. Step 6: Final answer
    x = 623,414.15

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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.