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Finding the Fourth Proportional to 512,110.70, 768,166.05 and 512,110.70

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Solution

The fourth proportional to 512,110.70, 768,166.05 and 512,110.70 is: 768,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,110.70 : 768,166.05 = 512,110.70 : x
  2. Step 2: Convert to fraction form
    512,110.70/768,166.05 = 512,110.70/x
  3. Step 3: Cross multiply
    512,110.70x = 768,166.05 × 512,110.70
  4. Step 4: Simplify right side
    512,110.70x = 393,386,053,581.74
  5. Step 5: Solve for x
    x = 393,386,053,581.74/512,110.70
  6. Step 6: Final answer
    x = 768,166.05

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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.