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Finding the Fourth Proportional to 545,991.52, 819,052.89 and 516,131.68

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Solution

The fourth proportional to 545,991.52, 819,052.89 and 516,131.68 is: 774,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,991.52 : 819,052.89 = 516,131.68 : x
  2. Step 2: Convert to fraction form
    545,991.52/819,052.89 = 516,131.68/x
  3. Step 3: Cross multiply
    545,991.52x = 819,052.89 × 516,131.68
  4. Step 4: Simplify right side
    545,991.52x = 422,739,144,124.56
  5. Step 5: Solve for x
    x = 422,739,144,124.56/545,991.52
  6. Step 6: Final answer
    x = 774,259.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.