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Finding the Fourth Proportional to 555,642.56, 766,786.68 and 300,993.68

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Solution

The fourth proportional to 555,642.56, 766,786.68 and 300,993.68 is: 415,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,642.56 : 766,786.68 = 300,993.68 : x
  2. Step 2: Convert to fraction form
    555,642.56/766,786.68 = 300,993.68/x
  3. Step 3: Cross multiply
    555,642.56x = 766,786.68 × 300,993.68
  4. Step 4: Simplify right side
    555,642.56x = 230,797,944,588.18
  5. Step 5: Solve for x
    x = 230,797,944,588.18/555,642.56
  6. Step 6: Final answer
    x = 415,371.25

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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.