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Finding the Fourth Proportional to 568,389.88, 784,358.20 and 338,828.69

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Solution

The fourth proportional to 568,389.88, 784,358.20 and 338,828.69 is: 467,571.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,389.88 : 784,358.20 = 338,828.69 : x
  2. Step 2: Convert to fraction form
    568,389.88/784,358.20 = 338,828.69/x
  3. Step 3: Cross multiply
    568,389.88x = 784,358.20 × 338,828.69
  4. Step 4: Simplify right side
    568,389.88x = 265,763,061,396.76
  5. Step 5: Solve for x
    x = 265,763,061,396.76/568,389.88
  6. Step 6: Final answer
    x = 467,571.77

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Double scale
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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.