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Finding the Fourth Proportional to 673,299, 929,172.06 and 371,512.44

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Solution

The fourth proportional to 673,299, 929,172.06 and 371,512.44 is: 512,697.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,299 : 929,172.06 = 371,512.44 : x
  2. Step 2: Convert to fraction form
    673,299/929,172.06 = 371,512.44/x
  3. Step 3: Cross multiply
    673,299x = 929,172.06 × 371,512.44
  4. Step 4: Simplify right side
    673,299x = 345,198,979,190.43
  5. Step 5: Solve for x
    x = 345,198,979,190.43/673,299
  6. Step 6: Final answer
    x = 512,697.89

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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.