Home / 821,093.40-1,231,640.10-537,658.20

Finding the Fourth Proportional to 821,093.40, 1,231,640.10 and 537,658.20

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Solution

The fourth proportional to 821,093.40, 1,231,640.10 and 537,658.20 is: 806,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,093.40 : 1,231,640.10 = 537,658.20 : x
  2. Step 2: Convert to fraction form
    821,093.40/1,231,640.10 = 537,658.20/x
  3. Step 3: Cross multiply
    821,093.40x = 1,231,640.10 × 537,658.20
  4. Step 4: Simplify right side
    821,093.40x = 662,201,399,213.82
  5. Step 5: Solve for x
    x = 662,201,399,213.82/821,093.40
  6. Step 6: Final answer
    x = 806,487.30

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Double scale
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Similar ratio
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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.