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Finding the Fourth Proportional to 682,761.60, 1,024,142.40 and 256,296.60

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Solution

The fourth proportional to 682,761.60, 1,024,142.40 and 256,296.60 is: 384,444.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,761.60 : 1,024,142.40 = 256,296.60 : x
  2. Step 2: Convert to fraction form
    682,761.60/1,024,142.40 = 256,296.60/x
  3. Step 3: Cross multiply
    682,761.60x = 1,024,142.40 × 256,296.60
  4. Step 4: Simplify right side
    682,761.60x = 262,484,215,035.84
  5. Step 5: Solve for x
    x = 262,484,215,035.84/682,761.60
  6. Step 6: Final answer
    x = 384,444.90

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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.