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Finding the Fourth Proportional to 568,286.22, 784,236.66 and 310,165.55

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Solution

The fourth proportional to 568,286.22, 784,236.66 and 310,165.55 is: 428,029.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,286.22 : 784,236.66 = 310,165.55 : x
  2. Step 2: Convert to fraction form
    568,286.22/784,236.66 = 310,165.55/x
  3. Step 3: Cross multiply
    568,286.22x = 784,236.66 × 310,165.55
  4. Step 4: Simplify right side
    568,286.22x = 243,243,194,979.06
  5. Step 5: Solve for x
    x = 243,243,194,979.06/568,286.22
  6. Step 6: Final answer
    x = 428,029.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.