Brown the meat in a pan. When completely cooked, drain the fat. Add the cooked rice; mix well. Set aside. Cut the potato, carrot, and beans into small bite-sized pieces. Place in a pot with water; bring to a boil. Simmer until veggies are tender (about 15-20 minutes). Drain. Add the vegetables to the meat mixture. Add garlic powder; toss thoroughly under low heat. Let the dinner cool thoroughly before serving to prevent burning.