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Finding the Fourth Proportional to 492,698.60, 739,072.20 and 256,502.60

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Solution

The fourth proportional to 492,698.60, 739,072.20 and 256,502.60 is: 384,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,698.60 : 739,072.20 = 256,502.60 : x
  2. Step 2: Convert to fraction form
    492,698.60/739,072.20 = 256,502.60/x
  3. Step 3: Cross multiply
    492,698.60x = 739,072.20 × 256,502.60
  4. Step 4: Simplify right side
    492,698.60x = 189,573,940,887.72
  5. Step 5: Solve for x
    x = 189,573,940,887.72/492,698.60
  6. Step 6: Final answer
    x = 384,766.55

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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.