Home / 6,420,639.78-8,860,480.72-3,519,968.42

Finding the Fourth Proportional to 6,420,639.78, 8,860,480.72 and 3,519,968.42

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Solution

The fourth proportional to 6,420,639.78, 8,860,480.72 and 3,519,968.42 is: 4,857,555.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,639.78 : 8,860,480.72 = 3,519,968.42 : x
  2. Step 2: Convert to fraction form
    6,420,639.78/8,860,480.72 = 3,519,968.42/x
  3. Step 3: Cross multiply
    6,420,639.78x = 8,860,480.72 × 3,519,968.42
  4. Step 4: Simplify right side
    6,420,639.78x = 31,188,612,333,770.14
  5. Step 5: Solve for x
    x = 31,188,612,333,770.14/6,420,639.78
  6. Step 6: Final answer
    x = 4,857,555.23

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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.