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Finding the Fourth Proportional to 517,690.56, 775,540.48 and 317,426.88

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Solution

The fourth proportional to 517,690.56, 775,540.48 and 317,426.88 is: 475,530.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,690.56 : 775,540.48 = 317,426.88 : x
  2. Step 2: Convert to fraction form
    517,690.56/775,540.48 = 317,426.88/x
  3. Step 3: Cross multiply
    517,690.56x = 775,540.48 × 317,426.88
  4. Step 4: Simplify right side
    517,690.56x = 246,177,394,880.10
  5. Step 5: Solve for x
    x = 246,177,394,880.10/517,690.56
  6. Step 6: Final answer
    x = 475,530.01

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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.