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Finding the Fourth Proportional to 555,491.25, 766,578.89 and 300,842.43

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Solution

The fourth proportional to 555,491.25, 766,578.89 and 300,842.43 is: 415,163.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,491.25 : 766,578.89 = 300,842.43 : x
  2. Step 2: Convert to fraction form
    555,491.25/766,578.89 = 300,842.43/x
  3. Step 3: Cross multiply
    555,491.25x = 766,578.89 × 300,842.43
  4. Step 4: Simplify right side
    555,491.25x = 230,619,456,054.30
  5. Step 5: Solve for x
    x = 230,619,456,054.30/555,491.25
  6. Step 6: Final answer
    x = 415,163.08

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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.