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Finding the Fourth Proportional to 3,978,686.88, 5,968,071.36 and 3,185,014.32

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Solution

The fourth proportional to 3,978,686.88, 5,968,071.36 and 3,185,014.32 is: 4,777,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,686.88 : 5,968,071.36 = 3,185,014.32 : x
  2. Step 2: Convert to fraction form
    3,978,686.88/5,968,071.36 = 3,185,014.32/x
  3. Step 3: Cross multiply
    3,978,686.88x = 5,968,071.36 × 3,185,014.32
  4. Step 4: Simplify right side
    3,978,686.88x = 19,008,392,744,381.88
  5. Step 5: Solve for x
    x = 19,008,392,744,381.88/3,978,686.88
  6. Step 6: Final answer
    x = 4,777,554.33

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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.