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Finding the Fourth Proportional to 664,997.60, 996,840.30 and 327,762.20

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Solution

The fourth proportional to 664,997.60, 996,840.30 and 327,762.20 is: 491,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,997.60 : 996,840.30 = 327,762.20 : x
  2. Step 2: Convert to fraction form
    664,997.60/996,840.30 = 327,762.20/x
  3. Step 3: Cross multiply
    664,997.60x = 996,840.30 × 327,762.20
  4. Step 4: Simplify right side
    664,997.60x = 326,726,569,776.66
  5. Step 5: Solve for x
    x = 326,726,569,776.66/664,997.60
  6. Step 6: Final answer
    x = 491,319.92

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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.