Home / 1,179,810,869.43-1,628,142,286.88-643,967,372.82

Finding the Fourth Proportional to 1,179,810,869.43, 1,628,142,286.88 and 643,967,372.82

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Solution

The fourth proportional to 1,179,810,869.43, 1,628,142,286.88 and 643,967,372.82 is: 888,676,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,810,869.43 : 1,628,142,286.88 = 643,967,372.82 : x
  2. Step 2: Convert to fraction form
    1,179,810,869.43/1,628,142,286.88 = 643,967,372.82/x
  3. Step 3: Cross multiply
    1,179,810,869.43x = 1,628,142,286.88 × 643,967,372.82
  4. Step 4: Simplify right side
    1,179,810,869.43x = 1,048,470,511,059,260,544
  5. Step 5: Solve for x
    x = 1,048,470,511,059,260,544/1,179,810,869.43
  6. Step 6: Final answer
    x = 888,676,768.65

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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.