Home / 1,189,418.92-1,641,399.64-645,554.64

Finding the Fourth Proportional to 1,189,418.92, 1,641,399.64 and 645,554.64

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Solution

The fourth proportional to 1,189,418.92, 1,641,399.64 and 645,554.64 is: 890,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,418.92 : 1,641,399.64 = 645,554.64 : x
  2. Step 2: Convert to fraction form
    1,189,418.92/1,641,399.64 = 645,554.64/x
  3. Step 3: Cross multiply
    1,189,418.92x = 1,641,399.64 × 645,554.64
  4. Step 4: Simplify right side
    1,189,418.92x = 1,059,613,161,868.94
  5. Step 5: Solve for x
    x = 1,059,613,161,868.94/1,189,418.92
  6. Step 6: Final answer
    x = 890,866.24

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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.