Which number is the largest among 72 x 10^6, 309 x 10^3, 204 x 10^4, and 5 x 10^3?

To determine which of the given numbers is the largest, we need to calculate the value of each expression.

1. **72 x 10⁶**:

– This equals 72,000,000.

2. **309 x 10³**:

– This equals 309,000.

3. **204 x 10⁴**:

– This equals 2,040,000.

4. **5 x 10³**:

– This equals 5,000.

Now let’s compare the results:

• 72 x 10⁶ = 72,000,000
• 309 x 10³ = 309,000
• 204 x 10⁴ = 2,040,000
• 5 x 10³ = 5,000

From the calculations, it is clear that 72 x 10⁶ (72,000,000) is indeed the largest number among them.