Home / 641,606.26-885,403.38-355,109.26

Finding the Fourth Proportional to 641,606.26, 885,403.38 and 355,109.26

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Solution

The fourth proportional to 641,606.26, 885,403.38 and 355,109.26 is: 490,043.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,606.26 : 885,403.38 = 355,109.26 : x
  2. Step 2: Convert to fraction form
    641,606.26/885,403.38 = 355,109.26/x
  3. Step 3: Cross multiply
    641,606.26x = 885,403.38 × 355,109.26
  4. Step 4: Simplify right side
    641,606.26x = 314,414,939,073.30
  5. Step 5: Solve for x
    x = 314,414,939,073.30/641,606.26
  6. Step 6: Final answer
    x = 490,043.44

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1.5x scale

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.