Home / 385,987,972.38-532,667,516.58-209,775,976.83

Finding the Fourth Proportional to 385,987,972.38, 532,667,516.58 and 209,775,976.83

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Solution

The fourth proportional to 385,987,972.38, 532,667,516.58 and 209,775,976.83 is: 289,493,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,987,972.38 : 532,667,516.58 = 209,775,976.83 : x
  2. Step 2: Convert to fraction form
    385,987,972.38/532,667,516.58 = 209,775,976.83/x
  3. Step 3: Cross multiply
    385,987,972.38x = 532,667,516.58 × 209,775,976.83
  4. Step 4: Simplify right side
    385,987,972.38x = 111,740,848,616,179,728
  5. Step 5: Solve for x
    x = 111,740,848,616,179,728/385,987,972.38
  6. Step 6: Final answer
    x = 289,493,084.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.