A medication order calls for $600 \mathrm{mg}$ of amoxicillin trihydrate to be administered IM to a pneumonic patient every 8 hours. Vials containing $250 \mathrm{mg}, 500 \mathrm{mg}$, and $1 \mathrm{~g}$ of amoxicillin trihydrate are available. Based on the manufacturer's instructions, dilution may made as follows:
$$
\begin{array}{ccc}
\hline \text { Drug Content/Vial } & \text { Volume of Diluent }(\mathrm{mL}) & \text { Final Volume } \\
& & \\
1 / \mathrm{g} & 2 & 2.1 \\
1 / 2 \mathrm{~g} & 5 & 5.2 \\
1 \mathrm{~g} & 10 & 10.5
\end{array}
$$
How could the prescribed dose of the antibiotic be obtained from each of the above three different potencies?