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Finding the Fourth Proportional to 479,912.60, 718,832.10 and 396,968.60

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Solution

The fourth proportional to 479,912.60, 718,832.10 and 396,968.60 is: 594,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,912.60 : 718,832.10 = 396,968.60 : x
  2. Step 2: Convert to fraction form
    479,912.60/718,832.10 = 396,968.60/x
  3. Step 3: Cross multiply
    479,912.60x = 718,832.10 × 396,968.60
  4. Step 4: Simplify right side
    479,912.60x = 285,353,772,372.06
  5. Step 5: Solve for x
    x = 285,353,772,372.06/479,912.60
  6. Step 6: Final answer
    x = 594,595.29

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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.