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Finding the Fourth Proportional to 568,311.15, 784,267.77 and 313,660.50

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Solution

The fourth proportional to 568,311.15, 784,267.77 and 313,660.50 is: 432,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,311.15 : 784,267.77 = 313,660.50 : x
  2. Step 2: Convert to fraction form
    568,311.15/784,267.77 = 313,660.50/x
  3. Step 3: Cross multiply
    568,311.15x = 784,267.77 × 313,660.50
  4. Step 4: Simplify right side
    568,311.15x = 245,993,820,872.09
  5. Step 5: Solve for x
    x = 245,993,820,872.09/568,311.15
  6. Step 6: Final answer
    x = 432,850.60

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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.