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Finding the Fourth Proportional to 3,942,714.88, 5,913,180 and 1,810,749.44

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Solution

The fourth proportional to 3,942,714.88, 5,913,180 and 1,810,749.44 is: 2,715,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942,714.88 : 5,913,180 = 1,810,749.44 : x
  2. Step 2: Convert to fraction form
    3,942,714.88/5,913,180 = 1,810,749.44/x
  3. Step 3: Cross multiply
    3,942,714.88x = 5,913,180 × 1,810,749.44
  4. Step 4: Simplify right side
    3,942,714.88x = 10,707,287,373,619.20
  5. Step 5: Solve for x
    x = 10,707,287,373,619.20/3,942,714.88
  6. Step 6: Final answer
    x = 2,715,714.35

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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.