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Finding the Fourth Proportional to 724,662.10, 1,086,665.10 and 275,233.60

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Solution

The fourth proportional to 724,662.10, 1,086,665.10 and 275,233.60 is: 412,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,662.10 : 1,086,665.10 = 275,233.60 : x
  2. Step 2: Convert to fraction form
    724,662.10/1,086,665.10 = 275,233.60/x
  3. Step 3: Cross multiply
    724,662.10x = 1,086,665.10 × 275,233.60
  4. Step 4: Simplify right side
    724,662.10x = 299,086,747,467.36
  5. Step 5: Solve for x
    x = 299,086,747,467.36/724,662.10
  6. Step 6: Final answer
    x = 412,725.80

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1.5x scale

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.