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Finding the Fourth Proportional to 806,841.54, 1,209,912.39 and 274,219.56

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Solution

The fourth proportional to 806,841.54, 1,209,912.39 and 274,219.56 is: 411,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,841.54 : 1,209,912.39 = 274,219.56 : x
  2. Step 2: Convert to fraction form
    806,841.54/1,209,912.39 = 274,219.56/x
  3. Step 3: Cross multiply
    806,841.54x = 1,209,912.39 × 274,219.56
  4. Step 4: Simplify right side
    806,841.54x = 331,781,643,224.35
  5. Step 5: Solve for x
    x = 331,781,643,224.35/806,841.54
  6. Step 6: Final answer
    x = 411,210.41

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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.