Home / 6,420,764.36-8,860,419.55-3,520,091.72

Finding the Fourth Proportional to 6,420,764.36, 8,860,419.55 and 3,520,091.72

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Solution

The fourth proportional to 6,420,764.36, 8,860,419.55 and 3,520,091.72 is: 4,857,597.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,764.36 : 8,860,419.55 = 3,520,091.72 : x
  2. Step 2: Convert to fraction form
    6,420,764.36/8,860,419.55 = 3,520,091.72/x
  3. Step 3: Cross multiply
    6,420,764.36x = 8,860,419.55 × 3,520,091.72
  4. Step 4: Simplify right side
    6,420,764.36x = 31,189,489,493,681.13
  5. Step 5: Solve for x
    x = 31,189,489,493,681.13/6,420,764.36
  6. Step 6: Final answer
    x = 4,857,597.59

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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.