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Finding the Fourth Proportional to 551,912.20, 827,212.20 and 495,487.60

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Solution

The fourth proportional to 551,912.20, 827,212.20 and 495,487.60 is: 742,642.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,912.20 : 827,212.20 = 495,487.60 : x
  2. Step 2: Convert to fraction form
    551,912.20/827,212.20 = 495,487.60/x
  3. Step 3: Cross multiply
    551,912.20x = 827,212.20 × 495,487.60
  4. Step 4: Simplify right side
    551,912.20x = 409,873,387,668.72
  5. Step 5: Solve for x
    x = 409,873,387,668.72/551,912.20
  6. Step 6: Final answer
    x = 742,642.38

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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.