FRANKFURT  The largest European carmarker, Volkswagen, moved quickly on Thursday to consolidate its grip on Porsche, which dismissed Wendelin Wiedeking, its chief executive, who had sought to take over VW in a quest that fell apart along with the global financial system.

Writing another chapter in the crisis-driven reordering of the global auto industry, Porsche’s supervisory board reached an agreement with Mr. Wiedeking calling for his departure. It approved plans for the new chief executive, Michael Macht, to secure an investment of billions of euros from the government of Qatar.

That will ease the way for the creation of an integrated automobile company that includes Porsche as the 10th brand in Volkswagen’s stable.

Alluding to Audi, the premium brand that Volkswagen turned into a profitable franchise in the United States and elsewhere, Volkswagen’s chief executive, Martin Winterkorn, predicted that Porsche would take advantage of the larger company’s economies of scale while protecting its brand in the eyes of its customers.