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Finding the Fourth Proportional to 555,491.37, 766,579.06 and 300,842.56

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Solution

The fourth proportional to 555,491.37, 766,579.06 and 300,842.56 is: 415,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,491.37 : 766,579.06 = 300,842.56 : x
  2. Step 2: Convert to fraction form
    555,491.37/766,579.06 = 300,842.56/x
  3. Step 3: Cross multiply
    555,491.37x = 766,579.06 × 300,842.56
  4. Step 4: Simplify right side
    555,491.37x = 230,619,606,852.79
  5. Step 5: Solve for x
    x = 230,619,606,852.79/555,491.37
  6. Step 6: Final answer
    x = 415,163.26

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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.