Home / 1,390,809,974.70-2,086,214,962.05-839,811,945.90

Finding the Fourth Proportional to 1,390,809,974.70, 2,086,214,962.05 and 839,811,945.90

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Solution

The fourth proportional to 1,390,809,974.70, 2,086,214,962.05 and 839,811,945.90 is: 1,259,717,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,809,974.70 : 2,086,214,962.05 = 839,811,945.90 : x
  2. Step 2: Convert to fraction form
    1,390,809,974.70/2,086,214,962.05 = 839,811,945.90/x
  3. Step 3: Cross multiply
    1,390,809,974.70x = 2,086,214,962.05 × 839,811,945.90
  4. Step 4: Simplify right side
    1,390,809,974.70x = 1,752,028,246,844,904,960
  5. Step 5: Solve for x
    x = 1,752,028,246,844,904,960/1,390,809,974.70
  6. Step 6: Final answer
    x = 1,259,717,918.85

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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.