Home / 442,496,912.80-663,745,369.20-212,914,400.80

Finding the Fourth Proportional to 442,496,912.80, 663,745,369.20 and 212,914,400.80

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Solution

The fourth proportional to 442,496,912.80, 663,745,369.20 and 212,914,400.80 is: 319,371,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,496,912.80 : 663,745,369.20 = 212,914,400.80 : x
  2. Step 2: Convert to fraction form
    442,496,912.80/663,745,369.20 = 212,914,400.80/x
  3. Step 3: Cross multiply
    442,496,912.80x = 663,745,369.20 × 212,914,400.80
  4. Step 4: Simplify right side
    442,496,912.80x = 141,320,947,566,992,800
  5. Step 5: Solve for x
    x = 141,320,947,566,992,800/442,496,912.80
  6. Step 6: Final answer
    x = 319,371,601.20

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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.