To solve the equation \( 16^{x-1} = 1024^{x-1} \), we first express both sides of the equation in terms of powers of 2.
We know:
- \( 16 = 2^4 \)
- \( 1024 = 2^{10} \)
Thus, we can rewrite the equation as:
\[ (2^4)^{x-1} = (2^{10})^{x-1} \]
This simplifies to:
\[ 2^{4(x-1)} = 2^{10(x-1)} \]
Since the bases are the same, we can set the exponents equal to each other:
\[ 4(x-1) = 10(x-1) \]
Now we can distribute on both sides:
\[ 4x - 4 = 10x - 10 \]
Next, we rearrange the equation to isolate \( x \):
\[ -4 + 10 = 10x - 4x \] \[ 6 = 6x \]
Now we solve for \( x \):
\[ x = \frac{6}{6} = 1 \]
To confirm, we can substitute \( x = 1 \) back into the original equation:
\[ 16^{1-1} = 1024^{1-1} \] \[ 16^0 = 1024^0 \] \[ 1 = 1 \]
This is true, so the solution is valid. Thus, the solution is:
\[ \boxed{1} \]