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Finding the Fourth Proportional to 492,800.40, 739,200.60 and 256,604.40

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Solution

The fourth proportional to 492,800.40, 739,200.60 and 256,604.40 is: 384,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,800.40 : 739,200.60 = 256,604.40 : x
  2. Step 2: Convert to fraction form
    492,800.40/739,200.60 = 256,604.40/x
  3. Step 3: Cross multiply
    492,800.40x = 739,200.60 × 256,604.40
  4. Step 4: Simplify right side
    492,800.40x = 189,682,126,442.64
  5. Step 5: Solve for x
    x = 189,682,126,442.64/492,800.40
  6. Step 6: Final answer
    x = 384,906.60

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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.