Just hide the text layers (click the eye next to the layer in the layers panel) and go to Image > Image size. Change the width to 440 and make sure you have 'Constrain Porportions' ticked.
Text layers can lose quality when resized that way. So after you've resized that, un hide the text layers and press ctrl+T to resize them manually.
Resized for you. Resizing text CAN go wrong by just editting the whole image, not always though.