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Finding the Fourth Proportional to 555,647.39, 766,795.75 and 300,998.58

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Solution

The fourth proportional to 555,647.39, 766,795.75 and 300,998.58 is: 415,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,647.39 : 766,795.75 = 300,998.58 : x
  2. Step 2: Convert to fraction form
    555,647.39/766,795.75 = 300,998.58/x
  3. Step 3: Cross multiply
    555,647.39x = 766,795.75 × 300,998.58
  4. Step 4: Simplify right side
    555,647.39x = 230,804,428,272.06
  5. Step 5: Solve for x
    x = 230,804,428,272.06/555,647.39
  6. Step 6: Final answer
    x = 415,379.31

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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.