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Finding the Fourth Proportional to 555,618.27, 766,756.90 and 300,969.46

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Solution

The fourth proportional to 555,618.27, 766,756.90 and 300,969.46 is: 415,339.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,618.27 : 766,756.90 = 300,969.46 : x
  2. Step 2: Convert to fraction form
    555,618.27/766,756.90 = 300,969.46/x
  3. Step 3: Cross multiply
    555,618.27x = 766,756.90 × 300,969.46
  4. Step 4: Simplify right side
    555,618.27x = 230,770,410,144.27
  5. Step 5: Solve for x
    x = 230,770,410,144.27/555,618.27
  6. Step 6: Final answer
    x = 415,339.85

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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.