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Finding the Fourth Proportional to 703,103.49, 970,361.68 and 397,199.58

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Solution

The fourth proportional to 703,103.49, 970,361.68 and 397,199.58 is: 548,179.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,103.49 : 970,361.68 = 397,199.58 : x
  2. Step 2: Convert to fraction form
    703,103.49/970,361.68 = 397,199.58/x
  3. Step 3: Cross multiply
    703,103.49x = 970,361.68 × 397,199.58
  4. Step 4: Simplify right side
    703,103.49x = 385,427,251,744.09
  5. Step 5: Solve for x
    x = 385,427,251,744.09/703,103.49
  6. Step 6: Final answer
    x = 548,179.97

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1.5x scale

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.