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Finding the Fourth Proportional to 611,291.88, 843,585.76 and 381,982.35

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Solution

The fourth proportional to 611,291.88, 843,585.76 and 381,982.35 is: 527,137.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,291.88 : 843,585.76 = 381,982.35 : x
  2. Step 2: Convert to fraction form
    611,291.88/843,585.76 = 381,982.35/x
  3. Step 3: Cross multiply
    611,291.88x = 843,585.76 × 381,982.35
  4. Step 4: Simplify right side
    611,291.88x = 322,234,867,778.44
  5. Step 5: Solve for x
    x = 322,234,867,778.44/611,291.88
  6. Step 6: Final answer
    x = 527,137.49

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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.