Home / 12,782,778.78-17,640,807.06-6,981,607.38

Finding the Fourth Proportional to 12,782,778.78, 17,640,807.06 and 6,981,607.38

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Solution

The fourth proportional to 12,782,778.78, 17,640,807.06 and 6,981,607.38 is: 9,634,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782,778.78 : 17,640,807.06 = 6,981,607.38 : x
  2. Step 2: Convert to fraction form
    12,782,778.78/17,640,807.06 = 6,981,607.38/x
  3. Step 3: Cross multiply
    12,782,778.78x = 17,640,807.06 × 6,981,607.38
  4. Step 4: Simplify right side
    12,782,778.78x = 123,161,188,759,252.09
  5. Step 5: Solve for x
    x = 123,161,188,759,252.09/12,782,778.78
  6. Step 6: Final answer
    x = 9,634,930.78

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1.5x scale

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.