Indian downstream giant, Reliance Industries Ltd has registered a 39% drop in its March quarter profit, pushed down by the sharp dip in oil prices and lower fuel demand. RIL posted a consolidated profit of $845 million in the quarter that ended March 31. The Mukesh Ambani-led conglomerate also reported an inventory loss of approximately $565 million. The firm's consolidated revenue from operations slipped 2.3% to $18.3 billion.