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Finding the Fourth Proportional to 703,170.24, 970,305.48 and 393,015.60

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Solution

The fourth proportional to 703,170.24, 970,305.48 and 393,015.60 is: 542,322.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,170.24 : 970,305.48 = 393,015.60 : x
  2. Step 2: Convert to fraction form
    703,170.24/970,305.48 = 393,015.60/x
  3. Step 3: Cross multiply
    703,170.24x = 970,305.48 × 393,015.60
  4. Step 4: Simplify right side
    703,170.24x = 381,345,190,405.49
  5. Step 5: Solve for x
    x = 381,345,190,405.49/703,170.24
  6. Step 6: Final answer
    x = 542,322.71

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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.