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Finding the Fourth Proportional to 512,013.80, 768,020.70 and 179,623.40

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Solution

The fourth proportional to 512,013.80, 768,020.70 and 179,623.40 is: 269,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,013.80 : 768,020.70 = 179,623.40 : x
  2. Step 2: Convert to fraction form
    512,013.80/768,020.70 = 179,623.40/x
  3. Step 3: Cross multiply
    512,013.80x = 768,020.70 × 179,623.40
  4. Step 4: Simplify right side
    512,013.80x = 137,954,489,404.38
  5. Step 5: Solve for x
    x = 137,954,489,404.38/512,013.80
  6. Step 6: Final answer
    x = 269,435.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.