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Finding the Fourth Proportional to 555,487.44, 766,571.95 and 300,839.64

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Solution

The fourth proportional to 555,487.44, 766,571.95 and 300,839.64 is: 415,158.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,487.44 : 766,571.95 = 300,839.64 : x
  2. Step 2: Convert to fraction form
    555,487.44/766,571.95 = 300,839.64/x
  3. Step 3: Cross multiply
    555,487.44x = 766,571.95 × 300,839.64
  4. Step 4: Simplify right side
    555,487.44x = 230,615,229,472.10
  5. Step 5: Solve for x
    x = 230,615,229,472.10/555,487.44
  6. Step 6: Final answer
    x = 415,158.31

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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.