Grid Scale Factor:
\[
\text {Grid Distance} = \text {Geodetic Distance} * \text {Grid Scale Factor}
\]
Elevation Factor:
\[
\text {Geodetic Distance} = \text {Ground Distance} * \text {Elevation Factor}
\]
Combined Scale Factor:
\[
\text {Combined Scale Factor} = \text {Grid Scale Factor} * \text {Elevation Factor}
\]
\[
\text {Grid Distance} = \text {Ground Distance} * \text {Combined Scale Factor}
\]