Home / 1,290,261,321,350.70-1,780,560,797,801.80-712,197,949,215.18

Finding the Fourth Proportional to 1,290,261,321,350.70, 1,780,560,797,801.80 and 712,197,949,215.18

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Solution

The fourth proportional to 1,290,261,321,350.70, 1,780,560,797,801.80 and 712,197,949,215.18 is: 982,833,266,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,261,321,350.70 : 1,780,560,797,801.80 = 712,197,949,215.18 : x
  2. Step 2: Convert to fraction form
    1,290,261,321,350.70/1,780,560,797,801.80 = 712,197,949,215.18/x
  3. Step 3: Cross multiply
    1,290,261,321,350.70x = 1,780,560,797,801.80 × 712,197,949,215.18
  4. Step 4: Simplify right side
    1,290,261,321,350.70x = 1,268,111,748,647,386,982,907,904
  5. Step 5: Solve for x
    x = 1,268,111,748,647,386,982,907,904/1,290,261,321,350.70
  6. Step 6: Final answer
    x = 982,833,266,147.88

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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.