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Finding the Fourth Proportional to 645,473.40, 967,324.34 and 408,391.66

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Solution

The fourth proportional to 645,473.40, 967,324.34 and 408,391.66 is: 612,027.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,473.40 : 967,324.34 = 408,391.66 : x
  2. Step 2: Convert to fraction form
    645,473.40/967,324.34 = 408,391.66/x
  3. Step 3: Cross multiply
    645,473.40x = 967,324.34 × 408,391.66
  4. Step 4: Simplify right side
    645,473.40x = 395,047,192,971.00
  5. Step 5: Solve for x
    x = 395,047,192,971.00/645,473.40
  6. Step 6: Final answer
    x = 612,027.07

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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.