Home / 2,989,368,611.20-4,484,052,916.80-918,821,331.10

Finding the Fourth Proportional to 2,989,368,611.20, 4,484,052,916.80 and 918,821,331.10

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Solution

The fourth proportional to 2,989,368,611.20, 4,484,052,916.80 and 918,821,331.10 is: 1,378,231,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,368,611.20 : 4,484,052,916.80 = 918,821,331.10 : x
  2. Step 2: Convert to fraction form
    2,989,368,611.20/4,484,052,916.80 = 918,821,331.10/x
  3. Step 3: Cross multiply
    2,989,368,611.20x = 4,484,052,916.80 × 918,821,331.10
  4. Step 4: Simplify right side
    2,989,368,611.20x = 4,120,043,469,737,013,760
  5. Step 5: Solve for x
    x = 4,120,043,469,737,013,760/2,989,368,611.20
  6. Step 6: Final answer
    x = 1,378,231,996.65

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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.