Home / 1,278,976,368.54-1,764,250,817.76-769,985,044.08

Finding the Fourth Proportional to 1,278,976,368.54, 1,764,250,817.76 and 769,985,044.08

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Solution

The fourth proportional to 1,278,976,368.54, 1,764,250,817.76 and 769,985,044.08 is: 1,062,135,921.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,976,368.54 : 1,764,250,817.76 = 769,985,044.08 : x
  2. Step 2: Convert to fraction form
    1,278,976,368.54/1,764,250,817.76 = 769,985,044.08/x
  3. Step 3: Cross multiply
    1,278,976,368.54x = 1,764,250,817.76 × 769,985,044.08
  4. Step 4: Simplify right side
    1,278,976,368.54x = 1,358,446,743,681,109,760
  5. Step 5: Solve for x
    x = 1,358,446,743,681,109,760/1,278,976,368.54
  6. Step 6: Final answer
    x = 1,062,135,921.43

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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.