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Finding the Fourth Proportional to 862,672.44, 1,190,472 and 470,208.80

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Solution

The fourth proportional to 862,672.44, 1,190,472 and 470,208.80 is: 648,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,672.44 : 1,190,472 = 470,208.80 : x
  2. Step 2: Convert to fraction form
    862,672.44/1,190,472 = 470,208.80/x
  3. Step 3: Cross multiply
    862,672.44x = 1,190,472 × 470,208.80
  4. Step 4: Simplify right side
    862,672.44x = 559,770,410,553.60
  5. Step 5: Solve for x
    x = 559,770,410,553.60/862,672.44
  6. Step 6: Final answer
    x = 648,879.44

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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.