Final answer:
The poverty rate for African Americans is substantially higher than the overall household poverty rate, often around two times greater, although the majority of individuals below the poverty line are white due to their larger population size.
Step-by-step explanation:
The relationship between the poverty rate for African Americans and the overall poverty rate for all households is that the poverty rate for African Americans is much higher than that of all households. Specifically, based on historical data, poverty rates for African Americans are significantly higher than for whites. While the exact multiple can vary with time and different datasets, the poverty rate for African Americans has commonly been around two times higher than the overall rate. For example, if the overall poverty rate was at 15%, the rate for African Americans might be 30% or more. Additionally, despite African Americans having higher rates of poverty, it's important to note that in terms of raw numbers, most people living below the poverty line in the United States are white because they represent a larger percentage of the population.