Hi Peggy,
If you need 510 grams of Miralax and you only have 476 grams, then unfortunately, that’s not quite enough.
You're 34 grams short (510 − 476 = 34 grams).
If you meant the other way around — that you need 476 grams and have 510 grams — then yes, you're all set!
Let me know if you'd like help converting units or adjusting measurements.
Best regards,
Sid Bhatia