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Finding the Fourth Proportional to 543,011.20, 814,516.80 and 501,020.80

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Solution

The fourth proportional to 543,011.20, 814,516.80 and 501,020.80 is: 751,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,011.20 : 814,516.80 = 501,020.80 : x
  2. Step 2: Convert to fraction form
    543,011.20/814,516.80 = 501,020.80/x
  3. Step 3: Cross multiply
    543,011.20x = 814,516.80 × 501,020.80
  4. Step 4: Simplify right side
    543,011.20x = 408,089,858,749.44
  5. Step 5: Solve for x
    x = 408,089,858,749.44/543,011.20
  6. Step 6: Final answer
    x = 751,531.20

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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.