The Carlyle Group has agreed to invest in PA Consulting Group for a 51% shareholding of the company. The investment values PA at $1 billion and is expected to close in December. Established in 1943, the company is a consulting, technology and innovation firm serving various businesses, governments and communities globally. The partnership with Carlyle will enable the firm to remain independent and accelerate its growth plan though geographic expansion and the acquisition of consultant teams and smaller firms. Capital for the investment will come from the $4.13 billion Carlyle Europe Partners IV vehicle, which closed in July.