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Finding the Fourth Proportional to 659,896.80, 989,845.20 and 494,008.80

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Solution

The fourth proportional to 659,896.80, 989,845.20 and 494,008.80 is: 741,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,896.80 : 989,845.20 = 494,008.80 : x
  2. Step 2: Convert to fraction form
    659,896.80/989,845.20 = 494,008.80/x
  3. Step 3: Cross multiply
    659,896.80x = 989,845.20 × 494,008.80
  4. Step 4: Simplify right side
    659,896.80x = 488,992,239,437.76
  5. Step 5: Solve for x
    x = 488,992,239,437.76/659,896.80
  6. Step 6: Final answer
    x = 741,013.20

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Double scale
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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.