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Finding the Fourth Proportional to 659,910.30, 989,865.45 and 494,022.30

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Solution

The fourth proportional to 659,910.30, 989,865.45 and 494,022.30 is: 741,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,910.30 : 989,865.45 = 494,022.30 : x
  2. Step 2: Convert to fraction form
    659,910.30/989,865.45 = 494,022.30/x
  3. Step 3: Cross multiply
    659,910.30x = 989,865.45 × 494,022.30
  4. Step 4: Simplify right side
    659,910.30x = 489,015,606,299.54
  5. Step 5: Solve for x
    x = 489,015,606,299.54/659,910.30
  6. Step 6: Final answer
    x = 741,033.45

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Half scale
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Double scale
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Similar ratio
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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.