Home / 1,992,905,999.20-2,989,358,998.80-682,372,493.20

Finding the Fourth Proportional to 1,992,905,999.20, 2,989,358,998.80 and 682,372,493.20

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Solution

The fourth proportional to 1,992,905,999.20, 2,989,358,998.80 and 682,372,493.20 is: 1,023,558,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,905,999.20 : 2,989,358,998.80 = 682,372,493.20 : x
  2. Step 2: Convert to fraction form
    1,992,905,999.20/2,989,358,998.80 = 682,372,493.20/x
  3. Step 3: Cross multiply
    1,992,905,999.20x = 2,989,358,998.80 × 682,372,493.20
  4. Step 4: Simplify right side
    1,992,905,999.20x = 2,039,856,353,081,011,968
  5. Step 5: Solve for x
    x = 2,039,856,353,081,011,968/1,992,905,999.20
  6. Step 6: Final answer
    x = 1,023,558,739.80

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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.