Perhaps you want to convert before the operation:
julia> BigFloat(10)^(1/4)
1.778279410038922801225421195192684844735790526402255358011830722776301881539489
Perhaps you want to convert before the operation:
julia> BigFloat(10)^(1/4)
1.778279410038922801225421195192684844735790526402255358011830722776301881539489