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Finding the Fourth Proportional to 666,849.60, 999,540.54 and 329,390.64

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Solution

The fourth proportional to 666,849.60, 999,540.54 and 329,390.64 is: 493,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,849.60 : 999,540.54 = 329,390.64 : x
  2. Step 2: Convert to fraction form
    666,849.60/999,540.54 = 329,390.64/x
  3. Step 3: Cross multiply
    666,849.60x = 999,540.54 × 329,390.64
  4. Step 4: Simplify right side
    666,849.60x = 329,239,298,176.55
  5. Step 5: Solve for x
    x = 329,239,298,176.55/666,849.60
  6. Step 6: Final answer
    x = 493,723.47

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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.