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Finding the Fourth Proportional to 492,816.60, 739,249.20 and 256,620.60

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Solution

The fourth proportional to 492,816.60, 739,249.20 and 256,620.60 is: 384,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,816.60 : 739,249.20 = 256,620.60 : x
  2. Step 2: Convert to fraction form
    492,816.60/739,249.20 = 256,620.60/x
  3. Step 3: Cross multiply
    492,816.60x = 739,249.20 × 256,620.60
  4. Step 4: Simplify right side
    492,816.60x = 189,706,573,253.52
  5. Step 5: Solve for x
    x = 189,706,573,253.52/492,816.60
  6. Step 6: Final answer
    x = 384,943.55

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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.