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Finding the Fourth Proportional to 646,408.48, 969,610.07 and 197,128.03

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Solution

The fourth proportional to 646,408.48, 969,610.07 and 197,128.03 is: 295,691.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,408.48 : 969,610.07 = 197,128.03 : x
  2. Step 2: Convert to fraction form
    646,408.48/969,610.07 = 197,128.03/x
  3. Step 3: Cross multiply
    646,408.48x = 969,610.07 × 197,128.03
  4. Step 4: Simplify right side
    646,408.48x = 191,137,317,133.57
  5. Step 5: Solve for x
    x = 191,137,317,133.57/646,408.48
  6. Step 6: Final answer
    x = 295,691.23

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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.