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Finding the Fourth Proportional to 568,285.78, 784,336.06 and 338,857.86

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Solution

The fourth proportional to 568,285.78, 784,336.06 and 338,857.86 is: 467,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,285.78 : 784,336.06 = 338,857.86 : x
  2. Step 2: Convert to fraction form
    568,285.78/784,336.06 = 338,857.86/x
  3. Step 3: Cross multiply
    568,285.78x = 784,336.06 × 338,857.86
  4. Step 4: Simplify right side
    568,285.78x = 265,778,438,812.43
  5. Step 5: Solve for x
    x = 265,778,438,812.43/568,285.78
  6. Step 6: Final answer
    x = 467,684.48

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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.