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Finding the Fourth Proportional to 667,074.80, 999,931.80 and 329,596.40

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Solution

The fourth proportional to 667,074.80, 999,931.80 and 329,596.40 is: 494,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,074.80 : 999,931.80 = 329,596.40 : x
  2. Step 2: Convert to fraction form
    667,074.80/999,931.80 = 329,596.40/x
  3. Step 3: Cross multiply
    667,074.80x = 999,931.80 × 329,596.40
  4. Step 4: Simplify right side
    667,074.80x = 329,573,921,525.52
  5. Step 5: Solve for x
    x = 329,573,921,525.52/667,074.80
  6. Step 6: Final answer
    x = 494,058.42

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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.