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Finding the Fourth Proportional to 420,763,846.96, 631,145,772.96 and 114,055,958.62

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Solution

The fourth proportional to 420,763,846.96, 631,145,772.96 and 114,055,958.62 is: 171,083,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,763,846.96 : 631,145,772.96 = 114,055,958.62 : x
  2. Step 2: Convert to fraction form
    420,763,846.96/631,145,772.96 = 114,055,958.62/x
  3. Step 3: Cross multiply
    420,763,846.96x = 631,145,772.96 × 114,055,958.62
  4. Step 4: Simplify right side
    420,763,846.96x = 71,985,936,163,913,680
  5. Step 5: Solve for x
    x = 71,985,936,163,913,680/420,763,846.96
  6. Step 6: Final answer
    x = 171,083,938.61

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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.