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Finding the Fourth Proportional to 664,710.97, 996,857.33 and 215,327.58

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Solution

The fourth proportional to 664,710.97, 996,857.33 and 215,327.58 is: 322,923.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,710.97 : 996,857.33 = 215,327.58 : x
  2. Step 2: Convert to fraction form
    664,710.97/996,857.33 = 215,327.58/x
  3. Step 3: Cross multiply
    664,710.97x = 996,857.33 × 215,327.58
  4. Step 4: Simplify right side
    664,710.97x = 214,650,872,905.38
  5. Step 5: Solve for x
    x = 214,650,872,905.38/664,710.97
  6. Step 6: Final answer
    x = 322,923.62

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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.