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Finding the Fourth Proportional to 550,804.78, 760,116.72 and 305,806.24

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Solution

The fourth proportional to 550,804.78, 760,116.72 and 305,806.24 is: 422,016.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,804.78 : 760,116.72 = 305,806.24 : x
  2. Step 2: Convert to fraction form
    550,804.78/760,116.72 = 305,806.24/x
  3. Step 3: Cross multiply
    550,804.78x = 760,116.72 × 305,806.24
  4. Step 4: Simplify right side
    550,804.78x = 232,448,436,104.33
  5. Step 5: Solve for x
    x = 232,448,436,104.33/550,804.78
  6. Step 6: Final answer
    x = 422,016.01

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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.