Home / 1,388,123,015.72-2,067,757,144.76-1,312,937,732.39

Finding the Fourth Proportional to 1,388,123,015.72, 2,067,757,144.76 and 1,312,937,732.39

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Solution

The fourth proportional to 1,388,123,015.72, 2,067,757,144.76 and 1,312,937,732.39 is: 1,955,760,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,123,015.72 : 2,067,757,144.76 = 1,312,937,732.39 : x
  2. Step 2: Convert to fraction form
    1,388,123,015.72/2,067,757,144.76 = 1,312,937,732.39/x
  3. Step 3: Cross multiply
    1,388,123,015.72x = 2,067,757,144.76 × 1,312,937,732.39
  4. Step 4: Simplify right side
    1,388,123,015.72x = 2,714,836,376,767,358,976
  5. Step 5: Solve for x
    x = 2,714,836,376,767,358,976/1,388,123,015.72
  6. Step 6: Final answer
    x = 1,955,760,653.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.