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Finding the Fourth Proportional to 379,552.54, 523,782.66 and 209,786.74

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Solution

The fourth proportional to 379,552.54, 523,782.66 and 209,786.74 is: 289,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,552.54 : 523,782.66 = 209,786.74 : x
  2. Step 2: Convert to fraction form
    379,552.54/523,782.66 = 209,786.74/x
  3. Step 3: Cross multiply
    379,552.54x = 523,782.66 × 209,786.74
  4. Step 4: Simplify right side
    379,552.54x = 109,882,656,709.93
  5. Step 5: Solve for x
    x = 109,882,656,709.93/379,552.54
  6. Step 6: Final answer
    x = 289,505.79

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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.