That depends what it is 0.4 of. If it is 0.4 centimetres, this is equal to 0.004 metres.
.004 km = 4 meters
That would be 4. Now, what did you actually mean to ask?
4
4 yd = 3.6576 m
Kilo means thousand. Therefore 4000 meters equals 4 kilometers.
120 meters = 4 724.40945 inches
19 meters is 62 feet 4⅛ inches.
.4 km
157.5 inches.
4 metres = 400 centimetres
8 km 4 meters = 315,118.11 inches.
4 meters 20 centimeters equals 4.2 meters.