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Finding the Fourth Proportional to 666,847.60, 999,537.54 and 329,388.64

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Solution

The fourth proportional to 666,847.60, 999,537.54 and 329,388.64 is: 493,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,847.60 : 999,537.54 = 329,388.64 : x
  2. Step 2: Convert to fraction form
    666,847.60/999,537.54 = 329,388.64/x
  3. Step 3: Cross multiply
    666,847.60x = 999,537.54 × 329,388.64
  4. Step 4: Simplify right side
    666,847.60x = 329,236,310,929.55
  5. Step 5: Solve for x
    x = 329,236,310,929.55/666,847.60
  6. Step 6: Final answer
    x = 493,720.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.