Home / 1,189,313.44-1,641,253.41-645,449.09

Finding the Fourth Proportional to 1,189,313.44, 1,641,253.41 and 645,449.09

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Solution

The fourth proportional to 1,189,313.44, 1,641,253.41 and 645,449.09 is: 890,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,313.44 : 1,641,253.41 = 645,449.09 : x
  2. Step 2: Convert to fraction form
    1,189,313.44/1,641,253.41 = 645,449.09/x
  3. Step 3: Cross multiply
    1,189,313.44x = 1,641,253.41 × 645,449.09
  4. Step 4: Simplify right side
    1,189,313.44x = 1,059,345,511,737.63
  5. Step 5: Solve for x
    x = 1,059,345,511,737.63/1,189,313.44
  6. Step 6: Final answer
    x = 890,720.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.