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Finding the Fourth Proportional to 568,205.78, 784,142.82 and 310,096.85

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Solution

The fourth proportional to 568,205.78, 784,142.82 and 310,096.85 is: 427,943.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,205.78 : 784,142.82 = 310,096.85 : x
  2. Step 2: Convert to fraction form
    568,205.78/784,142.82 = 310,096.85/x
  3. Step 3: Cross multiply
    568,205.78x = 784,142.82 × 310,096.85
  4. Step 4: Simplify right side
    568,205.78x = 243,160,214,511.40
  5. Step 5: Solve for x
    x = 243,160,214,511.40/568,205.78
  6. Step 6: Final answer
    x = 427,943.93

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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.