Home / 766,441,662.90-1,149,645,949.56-213,729,368.73

Finding the Fourth Proportional to 766,441,662.90, 1,149,645,949.56 and 213,729,368.73

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Solution

The fourth proportional to 766,441,662.90, 1,149,645,949.56 and 213,729,368.73 is: 320,589,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,441,662.90 : 1,149,645,949.56 = 213,729,368.73 : x
  2. Step 2: Convert to fraction form
    766,441,662.90/1,149,645,949.56 = 213,729,368.73/x
  3. Step 3: Cross multiply
    766,441,662.90x = 1,149,645,949.56 × 213,729,368.73
  4. Step 4: Simplify right side
    766,441,662.90x = 245,713,103,062,460,192
  5. Step 5: Solve for x
    x = 245,713,103,062,460,192/766,441,662.90
  6. Step 6: Final answer
    x = 320,589,439.43

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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.