Home / 1,398,945.28-1,930,694-855,399.64

Finding the Fourth Proportional to 1,398,945.28, 1,930,694 and 855,399.64

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Solution

The fourth proportional to 1,398,945.28, 1,930,694 and 855,399.64 is: 1,180,542.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,945.28 : 1,930,694 = 855,399.64 : x
  2. Step 2: Convert to fraction form
    1,398,945.28/1,930,694 = 855,399.64/x
  3. Step 3: Cross multiply
    1,398,945.28x = 1,930,694 × 855,399.64
  4. Step 4: Simplify right side
    1,398,945.28x = 1,651,514,952,550.16
  5. Step 5: Solve for x
    x = 1,651,514,952,550.16/1,398,945.28
  6. Step 6: Final answer
    x = 1,180,542.92

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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.