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Finding the Fourth Proportional to 479,940.60, 718,874.10 and 396,996.60

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Solution

The fourth proportional to 479,940.60, 718,874.10 and 396,996.60 is: 594,637.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,940.60 : 718,874.10 = 396,996.60 : x
  2. Step 2: Convert to fraction form
    479,940.60/718,874.10 = 396,996.60/x
  3. Step 3: Cross multiply
    479,940.60x = 718,874.10 × 396,996.60
  4. Step 4: Simplify right side
    479,940.60x = 285,390,573,528.06
  5. Step 5: Solve for x
    x = 285,390,573,528.06/479,940.60
  6. Step 6: Final answer
    x = 594,637.28

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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.