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Finding the Fourth Proportional to 703,125.54, 970,372.89 and 397,258.11

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Solution

The fourth proportional to 703,125.54, 970,372.89 and 397,258.11 is: 548,249.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,125.54 : 970,372.89 = 397,258.11 : x
  2. Step 2: Convert to fraction form
    703,125.54/970,372.89 = 397,258.11/x
  3. Step 3: Cross multiply
    703,125.54x = 970,372.89 × 397,258.11
  4. Step 4: Simplify right side
    703,125.54x = 385,488,500,276.64
  5. Step 5: Solve for x
    x = 385,488,500,276.64/703,125.54
  6. Step 6: Final answer
    x = 548,249.89

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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.