Home / 8,431,803.06-12,645,812.40-3,878,478.78

Finding the Fourth Proportional to 8,431,803.06, 12,645,812.40 and 3,878,478.78

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Solution

The fourth proportional to 8,431,803.06, 12,645,812.40 and 3,878,478.78 is: 5,816,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431,803.06 : 12,645,812.40 = 3,878,478.78 : x
  2. Step 2: Convert to fraction form
    8,431,803.06/12,645,812.40 = 3,878,478.78/x
  3. Step 3: Cross multiply
    8,431,803.06x = 12,645,812.40 × 3,878,478.78
  4. Step 4: Simplify right side
    8,431,803.06x = 49,046,515,049,260.87
  5. Step 5: Solve for x
    x = 49,046,515,049,260.87/8,431,803.06
  6. Step 6: Final answer
    x = 5,816,847.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.