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Finding the Fourth Proportional to 808,824, 1,116,177.12 and 451,128

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Solution

The fourth proportional to 808,824, 1,116,177.12 and 451,128 is: 622,556.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,824 : 1,116,177.12 = 451,128 : x
  2. Step 2: Convert to fraction form
    808,824/1,116,177.12 = 451,128/x
  3. Step 3: Cross multiply
    808,824x = 1,116,177.12 × 451,128
  4. Step 4: Simplify right side
    808,824x = 503,538,751,791.36
  5. Step 5: Solve for x
    x = 503,538,751,791.36/808,824
  6. Step 6: Final answer
    x = 622,556.64

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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.