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Finding the Fourth Proportional to 6,448,067.78, 8,898,961.53 and 4,813,637.02

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Solution

The fourth proportional to 6,448,067.78, 8,898,961.53 and 4,813,637.02 is: 6,643,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448,067.78 : 8,898,961.53 = 4,813,637.02 : x
  2. Step 2: Convert to fraction form
    6,448,067.78/8,898,961.53 = 4,813,637.02/x
  3. Step 3: Cross multiply
    6,448,067.78x = 8,898,961.53 × 4,813,637.02
  4. Step 4: Simplify right side
    6,448,067.78x = 42,836,370,660,363.84
  5. Step 5: Solve for x
    x = 42,836,370,660,363.84/6,448,067.78
  6. Step 6: Final answer
    x = 6,643,287.90

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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.