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Finding the Fourth Proportional to 512,920.79, 769,381.79 and 133,841.24

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Solution

The fourth proportional to 512,920.79, 769,381.79 and 133,841.24 is: 200,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,920.79 : 769,381.79 = 133,841.24 : x
  2. Step 2: Convert to fraction form
    512,920.79/769,381.79 = 133,841.24/x
  3. Step 3: Cross multiply
    512,920.79x = 769,381.79 × 133,841.24
  4. Step 4: Simplify right side
    512,920.79x = 102,975,015,503.86
  5. Step 5: Solve for x
    x = 102,975,015,503.86/512,920.79
  6. Step 6: Final answer
    x = 200,762.02

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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.