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Finding the Fourth Proportional to 665,944, 998,916.96 and 271,960

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Solution

The fourth proportional to 665,944, 998,916.96 and 271,960 is: 407,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,944 : 998,916.96 = 271,960 : x
  2. Step 2: Convert to fraction form
    665,944/998,916.96 = 271,960/x
  3. Step 3: Cross multiply
    665,944x = 998,916.96 × 271,960
  4. Step 4: Simplify right side
    665,944x = 271,665,456,441.60
  5. Step 5: Solve for x
    x = 271,665,456,441.60/665,944
  6. Step 6: Final answer
    x = 407,940.39

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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.