Home / 431,560,883.20-647,341,324.80-428,873,497.60

Finding the Fourth Proportional to 431,560,883.20, 647,341,324.80 and 428,873,497.60

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Solution

The fourth proportional to 431,560,883.20, 647,341,324.80 and 428,873,497.60 is: 643,310,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,560,883.20 : 647,341,324.80 = 428,873,497.60 : x
  2. Step 2: Convert to fraction form
    431,560,883.20/647,341,324.80 = 428,873,497.60/x
  3. Step 3: Cross multiply
    431,560,883.20x = 647,341,324.80 × 428,873,497.60
  4. Step 4: Simplify right side
    431,560,883.20x = 277,627,538,107,993,600
  5. Step 5: Solve for x
    x = 277,627,538,107,993,600/431,560,883.20
  6. Step 6: Final answer
    x = 643,310,246.40

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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.