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Finding the Fourth Proportional to 665,364.60, 998,192.70 and 328,566.60

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Solution

The fourth proportional to 665,364.60, 998,192.70 and 328,566.60 is: 492,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,364.60 : 998,192.70 = 328,566.60 : x
  2. Step 2: Convert to fraction form
    665,364.60/998,192.70 = 328,566.60/x
  3. Step 3: Cross multiply
    665,364.60x = 998,192.70 × 328,566.60
  4. Step 4: Simplify right side
    665,364.60x = 327,972,781,583.82
  5. Step 5: Solve for x
    x = 327,972,781,583.82/665,364.60
  6. Step 6: Final answer
    x = 492,921.90

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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.