Riding on high prices and larger volumes, Tata Steel, India's biggest private steel firm, has posted excellent performance for the quarter ended September with the net profit zooming to Rs 4703.64 crore against Rs 1489.56 crore in the same period last year. Sales rose to Rs 44,198.97 crore against Rs 32,441.61 crore in the same quarter of the last fiscal, a company release said.