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Finding the Fourth Proportional to 665,025.60, 997,684.20 and 328,227.60

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Solution

The fourth proportional to 665,025.60, 997,684.20 and 328,227.60 is: 492,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,025.60 : 997,684.20 = 328,227.60 : x
  2. Step 2: Convert to fraction form
    665,025.60/997,684.20 = 328,227.60/x
  3. Step 3: Cross multiply
    665,025.60x = 997,684.20 × 328,227.60
  4. Step 4: Simplify right side
    665,025.60x = 327,467,490,523.92
  5. Step 5: Solve for x
    x = 327,467,490,523.92/665,025.60
  6. Step 6: Final answer
    x = 492,413.36

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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.