$\frac{3}{5}$
$\frac{2}{5}$
$\frac{4}{9}$
$\frac{5}{9}$
$\frac{2}{3}$

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As we can see, we can divide the side in the proportion 1:1:1, and it will look like this. There are 4 triangles, that are the half of the rectangle where they are. And there's also a rectangle in the middle, whose area is $\frac{1}{3}l \times \frac{1}{3}l = \frac{1}{9} A_{ABCD}$ And the triangles are the other $\frac{8}{9}$ , so it's $\frac{1}{2} \times \frac{8}{9} + \frac {1}{9} = \frac{5}{9}$