Answer
Candle in the Wind and I want to Hold Your Hand;
White Christmas and It's Now or Never;
White Christmas and I Will Always Love You
Work Step by Step
Let's test each song for a song with 'x' million popularity :
1) Popularity of Candle in the Wind/ Song with popularity 'x' million=3/1
36/x=3/1
x=12 million
Candle in the Wind and I Want to Hold your hand
2) Popularity of White Christmas/ Song with popularity 'x' million=3/1
30/x=3/1
x=10 million
White Christmas and It's Now or Never
Also, White Christmas and I will Always Love You
3) Rock Around the Clock's popularity= 17 million
17 does not have 3 as a factor. Hence it won't form a 3:1 ratio
4) I want to Hold you hand/ song with 'x' popularity=3/1
12/x=3/1
x=4
There's no song with 4 million popularity
5) Diana song popularity/ song with popularity 'x' million=3/1
9/x=3/1
x=3
There's no song with popularity 3 million
