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Finding the Fourth Proportional to 409,212.70, 613,819.05 and 409,212.70

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Solution

The fourth proportional to 409,212.70, 613,819.05 and 409,212.70 is: 613,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,212.70 : 613,819.05 = 409,212.70 : x
  2. Step 2: Convert to fraction form
    409,212.70/613,819.05 = 409,212.70/x
  3. Step 3: Cross multiply
    409,212.70x = 613,819.05 × 409,212.70
  4. Step 4: Simplify right side
    409,212.70x = 251,182,550,761.94
  5. Step 5: Solve for x
    x = 251,182,550,761.94/409,212.70
  6. Step 6: Final answer
    x = 613,819.05

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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.