Home / 641,961.86-885,906.82-355,481.94

Finding the Fourth Proportional to 641,961.86, 885,906.82 and 355,481.94

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Solution

The fourth proportional to 641,961.86, 885,906.82 and 355,481.94 is: 490,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,961.86 : 885,906.82 = 355,481.94 : x
  2. Step 2: Convert to fraction form
    641,961.86/885,906.82 = 355,481.94/x
  3. Step 3: Cross multiply
    641,961.86x = 885,906.82 × 355,481.94
  4. Step 4: Simplify right side
    641,961.86x = 314,923,875,032.83
  5. Step 5: Solve for x
    x = 314,923,875,032.83/641,961.86
  6. Step 6: Final answer
    x = 490,564.77

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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.