Home / 777,412,908.90-1,067,119,187.49-687,333,659.40

Finding the Fourth Proportional to 777,412,908.90, 1,067,119,187.49 and 687,333,659.40

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Solution

The fourth proportional to 777,412,908.90, 1,067,119,187.49 and 687,333,659.40 is: 943,471,516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,412,908.90 : 1,067,119,187.49 = 687,333,659.40 : x
  2. Step 2: Convert to fraction form
    777,412,908.90/1,067,119,187.49 = 687,333,659.40/x
  3. Step 3: Cross multiply
    777,412,908.90x = 1,067,119,187.49 × 687,333,659.40
  4. Step 4: Simplify right side
    777,412,908.90x = 733,466,936,153,456,384
  5. Step 5: Solve for x
    x = 733,466,936,153,456,384/777,412,908.90
  6. Step 6: Final answer
    x = 943,471,516.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.