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Finding the Fourth Proportional to 702,372.21, 969,272.51 and 396,512.97

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Solution

The fourth proportional to 702,372.21, 969,272.51 and 396,512.97 is: 547,187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,372.21 : 969,272.51 = 396,512.97 : x
  2. Step 2: Convert to fraction form
    702,372.21/969,272.51 = 396,512.97/x
  3. Step 3: Cross multiply
    702,372.21x = 969,272.51 × 396,512.97
  4. Step 4: Simplify right side
    702,372.21x = 384,329,119,696.89
  5. Step 5: Solve for x
    x = 384,329,119,696.89/702,372.21
  6. Step 6: Final answer
    x = 547,187.25

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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.