Home / 664,417.16-996,771.09-215,183.44

Finding the Fourth Proportional to 664,417.16, 996,771.09 and 215,183.44

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Solution

The fourth proportional to 664,417.16, 996,771.09 and 215,183.44 is: 322,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,417.16 : 996,771.09 = 215,183.44 : x
  2. Step 2: Convert to fraction form
    664,417.16/996,771.09 = 215,183.44/x
  3. Step 3: Cross multiply
    664,417.16x = 996,771.09 × 215,183.44
  4. Step 4: Simplify right side
    664,417.16x = 214,488,636,289.87
  5. Step 5: Solve for x
    x = 214,488,636,289.87/664,417.16
  6. Step 6: Final answer
    x = 322,822.24

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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.