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Finding the Fourth Proportional to 703,178.85, 970,317.30 and 393,023.37

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Solution

The fourth proportional to 703,178.85, 970,317.30 and 393,023.37 is: 542,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,178.85 : 970,317.30 = 393,023.37 : x
  2. Step 2: Convert to fraction form
    703,178.85/970,317.30 = 393,023.37/x
  3. Step 3: Cross multiply
    703,178.85x = 970,317.30 × 393,023.37
  4. Step 4: Simplify right side
    703,178.85x = 381,357,375,215.30
  5. Step 5: Solve for x
    x = 381,357,375,215.30/703,178.85
  6. Step 6: Final answer
    x = 542,333.40

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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.