United Company RusAl, the world’s largest aluminum maker, said first-quarter profit more than tripled, aided by rising metal prices and a revaluation of long-term power contracts. Net income climbed to $746 million from $247 million a year ago, the company said Thursday in a statement. That’s more than the $570 million median of three analyst forecasts collated by Bloomberg News. Revenue rose 28 percent to $2.99 billion, helped […]