jacoblund/Getty Images Your crucial retirement number isn’t the balance of your 401(k). Key Takeaways Most households should aim to replace 70% to 85% of their pre-retirement pay, combining savings withdrawals with Social Security. Adjusting the mix of contributions, your claiming age, and products such as annuities lets you hit a personalized replacement target. Reaching $1 million in your 401(k) is a big milestone, but a seven‑figure balance can be a mirage. The question is whether all of your ret ...