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Finding the Fourth Proportional to 2,883,122.72, 3,978,049.46 and 1,721,343.32

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Solution

The fourth proportional to 2,883,122.72, 3,978,049.46 and 1,721,343.32 is: 2,375,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883,122.72 : 3,978,049.46 = 1,721,343.32 : x
  2. Step 2: Convert to fraction form
    2,883,122.72/3,978,049.46 = 1,721,343.32/x
  3. Step 3: Cross multiply
    2,883,122.72x = 3,978,049.46 × 1,721,343.32
  4. Step 4: Simplify right side
    2,883,122.72x = 6,847,588,864,600.61
  5. Step 5: Solve for x
    x = 6,847,588,864,600.61/2,883,122.72
  6. Step 6: Final answer
    x = 2,375,059.80

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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.