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Finding the Fourth Proportional to 704,679.76, 972,231.92 and 394,536.64

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Solution

The fourth proportional to 704,679.76, 972,231.92 and 394,536.64 is: 544,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,679.76 : 972,231.92 = 394,536.64 : x
  2. Step 2: Convert to fraction form
    704,679.76/972,231.92 = 394,536.64/x
  3. Step 3: Cross multiply
    704,679.76x = 972,231.92 × 394,536.64
  4. Step 4: Simplify right side
    704,679.76x = 383,581,115,017.55
  5. Step 5: Solve for x
    x = 383,581,115,017.55/704,679.76
  6. Step 6: Final answer
    x = 544,333.95

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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.