Home / 641,721.35-886,175.56-412,676.39

Finding the Fourth Proportional to 641,721.35, 886,175.56 and 412,676.39

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Solution

The fourth proportional to 641,721.35, 886,175.56 and 412,676.39 is: 569,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,721.35 : 886,175.56 = 412,676.39 : x
  2. Step 2: Convert to fraction form
    641,721.35/886,175.56 = 412,676.39/x
  3. Step 3: Cross multiply
    641,721.35x = 886,175.56 × 412,676.39
  4. Step 4: Simplify right side
    641,721.35x = 365,703,733,281.71
  5. Step 5: Solve for x
    x = 365,703,733,281.71/641,721.35
  6. Step 6: Final answer
    x = 569,879.33

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Double scale
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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.