Home / 605,078,780.69-907,882,168.43-211,887,812.90

Finding the Fourth Proportional to 605,078,780.69, 907,882,168.43 and 211,887,812.90

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Solution

The fourth proportional to 605,078,780.69, 907,882,168.43 and 211,887,812.90 is: 317,924,166.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,078,780.69 : 907,882,168.43 = 211,887,812.90 : x
  2. Step 2: Convert to fraction form
    605,078,780.69/907,882,168.43 = 211,887,812.90/x
  3. Step 3: Cross multiply
    605,078,780.69x = 907,882,168.43 × 211,887,812.90
  4. Step 4: Simplify right side
    605,078,780.69x = 192,369,167,042,341,568
  5. Step 5: Solve for x
    x = 192,369,167,042,341,568/605,078,780.69
  6. Step 6: Final answer
    x = 317,924,166.54

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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.