Home / 811,966,818.62-1,218,462,563.78-345,627,481.25

Finding the Fourth Proportional to 811,966,818.62, 1,218,462,563.78 and 345,627,481.25

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Solution

The fourth proportional to 811,966,818.62, 1,218,462,563.78 and 345,627,481.25 is: 518,659,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,966,818.62 : 1,218,462,563.78 = 345,627,481.25 : x
  2. Step 2: Convert to fraction form
    811,966,818.62/1,218,462,563.78 = 345,627,481.25/x
  3. Step 3: Cross multiply
    811,966,818.62x = 1,218,462,563.78 × 345,627,481.25
  4. Step 4: Simplify right side
    811,966,818.62x = 421,134,146,914,405,824
  5. Step 5: Solve for x
    x = 421,134,146,914,405,824/811,966,818.62
  6. Step 6: Final answer
    x = 518,659,306.34

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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.