Home / 1,290,261,321,339.20-1,780,560,797,785.80-712,197,949,203.60

Finding the Fourth Proportional to 1,290,261,321,339.20, 1,780,560,797,785.80 and 712,197,949,203.60

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Solution

The fourth proportional to 1,290,261,321,339.20, 1,780,560,797,785.80 and 712,197,949,203.60 is: 982,833,266,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,261,321,339.20 : 1,780,560,797,785.80 = 712,197,949,203.60 : x
  2. Step 2: Convert to fraction form
    1,290,261,321,339.20/1,780,560,797,785.80 = 712,197,949,203.60/x
  3. Step 3: Cross multiply
    1,290,261,321,339.20x = 1,780,560,797,785.80 × 712,197,949,203.60
  4. Step 4: Simplify right side
    1,290,261,321,339.20x = 1,268,111,748,615,372,565,118,976
  5. Step 5: Solve for x
    x = 1,268,111,748,615,372,565,118,976/1,290,261,321,339.20
  6. Step 6: Final answer
    x = 982,833,266,131.83

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Double scale
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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.