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Finding the Fourth Proportional to 3,979,361.22, 5,970,303.52 and 1,420,521.30

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Solution

The fourth proportional to 3,979,361.22, 5,970,303.52 and 1,420,521.30 is: 2,131,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,361.22 : 5,970,303.52 = 1,420,521.30 : x
  2. Step 2: Convert to fraction form
    3,979,361.22/5,970,303.52 = 1,420,521.30/x
  3. Step 3: Cross multiply
    3,979,361.22x = 5,970,303.52 × 1,420,521.30
  4. Step 4: Simplify right side
    3,979,361.22x = 8,480,943,314,073.67
  5. Step 5: Solve for x
    x = 8,480,943,314,073.67/3,979,361.22
  6. Step 6: Final answer
    x = 2,131,232.34

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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.