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Finding the Fourth Proportional to 599,997.80, 899,996.70 and 388,490.60

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Solution

The fourth proportional to 599,997.80, 899,996.70 and 388,490.60 is: 582,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,997.80 : 899,996.70 = 388,490.60 : x
  2. Step 2: Convert to fraction form
    599,997.80/899,996.70 = 388,490.60/x
  3. Step 3: Cross multiply
    599,997.80x = 899,996.70 × 388,490.60
  4. Step 4: Simplify right side
    599,997.80x = 349,640,257,981.02
  5. Step 5: Solve for x
    x = 349,640,257,981.02/599,997.80
  6. Step 6: Final answer
    x = 582,735.90

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Similar ratio
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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.