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Finding the Fourth Proportional to 667,072.80, 999,928.80 and 329,594.40

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Solution

The fourth proportional to 667,072.80, 999,928.80 and 329,594.40 is: 494,055.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,072.80 : 999,928.80 = 329,594.40 : x
  2. Step 2: Convert to fraction form
    667,072.80/999,928.80 = 329,594.40/x
  3. Step 3: Cross multiply
    667,072.80x = 999,928.80 × 329,594.40
  4. Step 4: Simplify right side
    667,072.80x = 329,570,932,878.72
  5. Step 5: Solve for x
    x = 329,570,932,878.72/667,072.80
  6. Step 6: Final answer
    x = 494,055.42

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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.