Home / 6,420,760.11-8,860,413.69-3,520,087.47

Finding the Fourth Proportional to 6,420,760.11, 8,860,413.69 and 3,520,087.47

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Solution

The fourth proportional to 6,420,760.11, 8,860,413.69 and 3,520,087.47 is: 4,857,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,760.11 : 8,860,413.69 = 3,520,087.47 : x
  2. Step 2: Convert to fraction form
    6,420,760.11/8,860,413.69 = 3,520,087.47/x
  3. Step 3: Cross multiply
    6,420,760.11x = 8,860,413.69 × 3,520,087.47
  4. Step 4: Simplify right side
    6,420,760.11x = 31,189,431,209,185.46
  5. Step 5: Solve for x
    x = 31,189,431,209,185.46/6,420,760.11
  6. Step 6: Final answer
    x = 4,857,591.73

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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.