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Finding the Fourth Proportional to 664,983.60, 997,183.80 and 265,491.60

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Solution

The fourth proportional to 664,983.60, 997,183.80 and 265,491.60 is: 398,120.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,983.60 : 997,183.80 = 265,491.60 : x
  2. Step 2: Convert to fraction form
    664,983.60/997,183.80 = 265,491.60/x
  3. Step 3: Cross multiply
    664,983.60x = 997,183.80 × 265,491.60
  4. Step 4: Simplify right side
    664,983.60x = 264,743,922,556.08
  5. Step 5: Solve for x
    x = 264,743,922,556.08/664,983.60
  6. Step 6: Final answer
    x = 398,120.98

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Double scale
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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.