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Finding the Fourth Proportional to 479,649.36, 661,917.57 and 261,858.39

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Solution

The fourth proportional to 479,649.36, 661,917.57 and 261,858.39 is: 361,365.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,649.36 : 661,917.57 = 261,858.39 : x
  2. Step 2: Convert to fraction form
    479,649.36/661,917.57 = 261,858.39/x
  3. Step 3: Cross multiply
    479,649.36x = 661,917.57 × 261,858.39
  4. Step 4: Simplify right side
    479,649.36x = 173,328,669,192.91
  5. Step 5: Solve for x
    x = 173,328,669,192.91/479,649.36
  6. Step 6: Final answer
    x = 361,365.37

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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.