Home / 6,420,589.92-8,860,411.89-3,519,918.54

Finding the Fourth Proportional to 6,420,589.92, 8,860,411.89 and 3,519,918.54

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Solution

The fourth proportional to 6,420,589.92, 8,860,411.89 and 3,519,918.54 is: 4,857,486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,589.92 : 8,860,411.89 = 3,519,918.54 : x
  2. Step 2: Convert to fraction form
    6,420,589.92/8,860,411.89 = 3,519,918.54/x
  3. Step 3: Cross multiply
    6,420,589.92x = 8,860,411.89 × 3,519,918.54
  4. Step 4: Simplify right side
    6,420,589.92x = 31,187,928,083,647.44
  5. Step 5: Solve for x
    x = 31,187,928,083,647.44/6,420,589.92
  6. Step 6: Final answer
    x = 4,857,486.38

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1.5x scale

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.