Home / 6,420,381.12-8,860,069.44-3,519,719.28

Finding the Fourth Proportional to 6,420,381.12, 8,860,069.44 and 3,519,719.28

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Solution

The fourth proportional to 6,420,381.12, 8,860,069.44 and 3,519,719.28 is: 4,857,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,381.12 : 8,860,069.44 = 3,519,719.28 : x
  2. Step 2: Convert to fraction form
    6,420,381.12/8,860,069.44 = 3,519,719.28/x
  3. Step 3: Cross multiply
    6,420,381.12x = 8,860,069.44 × 3,519,719.28
  4. Step 4: Simplify right side
    6,420,381.12x = 31,184,957,230,106.80
  5. Step 5: Solve for x
    x = 31,184,957,230,106.80/6,420,381.12
  6. Step 6: Final answer
    x = 4,857,181.63

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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.