Home / 1,979,562,756.78-2,971,939,228.29-1,327,431,837.78

Finding the Fourth Proportional to 1,979,562,756.78, 2,971,939,228.29 and 1,327,431,837.78

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Solution

The fourth proportional to 1,979,562,756.78, 2,971,939,228.29 and 1,327,431,837.78 is: 1,992,887,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,562,756.78 : 2,971,939,228.29 = 1,327,431,837.78 : x
  2. Step 2: Convert to fraction form
    1,979,562,756.78/2,971,939,228.29 = 1,327,431,837.78/x
  3. Step 3: Cross multiply
    1,979,562,756.78x = 2,971,939,228.29 × 1,327,431,837.78
  4. Step 4: Simplify right side
    1,979,562,756.78x = 3,945,046,751,579,469,312
  5. Step 5: Solve for x
    x = 3,945,046,751,579,469,312/1,979,562,756.78
  6. Step 6: Final answer
    x = 1,992,887,943.60

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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.