That was the data from 2022. Because of inflation, the number is even higher now.
Of course the median net worth is much lower due to uneven distribution.
But mathematical average is $570,000 and that is per adult, not household.
For couples, the average networth should be $1M at early 40s.
So $400K is ok, but not amazing (definitely better than half of the population but still very stretched and limited).
$400K is close to the total cost of attending a top private college with full pay for ONLY ONE child at today's dollars.