Linux + extend VM disk and procedure to use the extra size after DISK extended

We have VM linux server with disk of 100G ( LVM )

We want to extend the OS disk from The Vcenter from 100G to 500G ,
and using the extra size for new partition with 400G

So the plan is like this

Increasing the disk from Vcenter to 500G Re-scan the disk as

echo 1>/sys/class/block/sdd/device/rescan

create space for new partition with fdisk , for example if the default PV is /dev/sda2 ,

then we create new partition as
/dev/sda3

so
sda1 is for boot sda2 is for / and /var and the new one that we create is sda3

then we perform the following

pvcreate /dev/sda3
vgextend VOLG /dev/sda3

finally we should get like this from pvs

pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 VOLG lvm2 a-- 100.51g 9.00m
/dev/sda3 VOLG lvm2 a-- 400.00g 400.00g

Until now I explain the approach how to use extra disk size after increasing the OS disk from 100G to 500G

Now , we want to know what the other option to have extra disk space after increasing the OS disk from 100G to 500G

Any other approach that we can use?