Home / 1,259,743,719.60-1,889,615,579.40-398,100,711.60

Finding the Fourth Proportional to 1,259,743,719.60, 1,889,615,579.40 and 398,100,711.60

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Solution

The fourth proportional to 1,259,743,719.60, 1,889,615,579.40 and 398,100,711.60 is: 597,151,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,743,719.60 : 1,889,615,579.40 = 398,100,711.60 : x
  2. Step 2: Convert to fraction form
    1,259,743,719.60/1,889,615,579.40 = 398,100,711.60/x
  3. Step 3: Cross multiply
    1,259,743,719.60x = 1,889,615,579.40 × 398,100,711.60
  4. Step 4: Simplify right side
    1,259,743,719.60x = 752,257,306,809,586,432
  5. Step 5: Solve for x
    x = 752,257,306,809,586,432/1,259,743,719.60
  6. Step 6: Final answer
    x = 597,151,067.40

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Double scale
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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.