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Finding the Fourth Proportional to 492,840.60, 739,285.20 and 256,644.60

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Solution

The fourth proportional to 492,840.60, 739,285.20 and 256,644.60 is: 384,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,840.60 : 739,285.20 = 256,644.60 : x
  2. Step 2: Convert to fraction form
    492,840.60/739,285.20 = 256,644.60/x
  3. Step 3: Cross multiply
    492,840.60x = 739,285.20 × 256,644.60
  4. Step 4: Simplify right side
    492,840.60x = 189,733,554,439.92
  5. Step 5: Solve for x
    x = 189,733,554,439.92/492,840.60
  6. Step 6: Final answer
    x = 384,979.55

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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.