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Finding the Fourth Proportional to 2,987,212.80, 4,472,524.80 and 2,904,268.80

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Solution

The fourth proportional to 2,987,212.80, 4,472,524.80 and 2,904,268.80 is: 4,348,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987,212.80 : 4,472,524.80 = 2,904,268.80 : x
  2. Step 2: Convert to fraction form
    2,987,212.80/4,472,524.80 = 2,904,268.80/x
  3. Step 3: Cross multiply
    2,987,212.80x = 4,472,524.80 × 2,904,268.80
  4. Step 4: Simplify right side
    2,987,212.80x = 12,989,414,233,866.24
  5. Step 5: Solve for x
    x = 12,989,414,233,866.24/2,987,212.80
  6. Step 6: Final answer
    x = 4,348,339.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.