Home / 1,172,204,121.71-1,617,687,179.37-643,590,387.83

Finding the Fourth Proportional to 1,172,204,121.71, 1,617,687,179.37 and 643,590,387.83

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Solution

The fourth proportional to 1,172,204,121.71, 1,617,687,179.37 and 643,590,387.83 is: 888,179,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,204,121.71 : 1,617,687,179.37 = 643,590,387.83 : x
  2. Step 2: Convert to fraction form
    1,172,204,121.71/1,617,687,179.37 = 643,590,387.83/x
  3. Step 3: Cross multiply
    1,172,204,121.71x = 1,617,687,179.37 × 643,590,387.83
  4. Step 4: Simplify right side
    1,172,204,121.71x = 1,041,127,919,150,268,672
  5. Step 5: Solve for x
    x = 1,041,127,919,150,268,672/1,172,204,121.71
  6. Step 6: Final answer
    x = 888,179,711.94

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Double scale
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1.5x scale

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.