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Finding the Fourth Proportional to 664,270.70, 996,406.05 and 658,049.90

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Solution

The fourth proportional to 664,270.70, 996,406.05 and 658,049.90 is: 987,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,270.70 : 996,406.05 = 658,049.90 : x
  2. Step 2: Convert to fraction form
    664,270.70/996,406.05 = 658,049.90/x
  3. Step 3: Cross multiply
    664,270.70x = 996,406.05 × 658,049.90
  4. Step 4: Simplify right side
    664,270.70x = 655,684,901,561.90
  5. Step 5: Solve for x
    x = 655,684,901,561.90/664,270.70
  6. Step 6: Final answer
    x = 987,074.85

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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.