Home / 6,420,811.11-8,860,484.21-3,520,138.38

Finding the Fourth Proportional to 6,420,811.11, 8,860,484.21 and 3,520,138.38

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Solution

The fourth proportional to 6,420,811.11, 8,860,484.21 and 3,520,138.38 is: 4,857,662.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,811.11 : 8,860,484.21 = 3,520,138.38 : x
  2. Step 2: Convert to fraction form
    6,420,811.11/8,860,484.21 = 3,520,138.38/x
  3. Step 3: Cross multiply
    6,420,811.11x = 8,860,484.21 × 3,520,138.38
  4. Step 4: Simplify right side
    6,420,811.11x = 31,190,130,515,404.29
  5. Step 5: Solve for x
    x = 31,190,130,515,404.29/6,420,811.11
  6. Step 6: Final answer
    x = 4,857,662.06

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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.