We are given the equation:
\[
\frac{1}{3} \log N + 3 \log M = 1 + \log 1000
\]
First, simplify the equation:
\[
\frac{1}{3} \log N + 3 \log M = 1 + 3
\]
\[
\frac{1}{3} \log N + 3 \log M = 4
\]
Multiply through by 3:
\[
\log N + 9 \log M = 12
\]
Thus, the relationship between $M$ and $N$ is derived from logarithmic properties. Solving for $M$ and $N$, we find that the equation $M^p = \frac{9}{N}$ holds.