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Finding the Fourth Proportional to 568,396.44, 784,396.71 and 310,286.70

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Solution

The fourth proportional to 568,396.44, 784,396.71 and 310,286.70 is: 428,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,396.44 : 784,396.71 = 310,286.70 : x
  2. Step 2: Convert to fraction form
    568,396.44/784,396.71 = 310,286.70/x
  3. Step 3: Cross multiply
    568,396.44x = 784,396.71 × 310,286.70
  4. Step 4: Simplify right side
    568,396.44x = 243,387,866,636.76
  5. Step 5: Solve for x
    x = 243,387,866,636.76/568,396.44
  6. Step 6: Final answer
    x = 428,200.90

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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.