French sports magazine So Foot said the 30-year-old forward handed the sum of money to the charitable organisation Save the Children, which is helping survivors of the earthquake that struck the Asian country last month.
Last month Ronaldo also called upon his vast Facebook following of over 100 million people to donate to the children's charity.
It is by no means the first charitable act by Ronaldo, who is believed to have paid for a 10-month old boy to have brain surgery last year.
And in 2004 he flew to the aid of Indonesian tsunami victims after he saw footage of a young man wearing a Portugal shirt with his name on the back.
On the pitch, Ronaldo is preparing with Real Madrid to face Valencia in La Liga on Saturday night, before the second leg of their Champions League semi-final against Juventus on Wednesday.
Ronaldo scored in the 2-1 first-leg defeat in Turin, leveling after former team-mate Alvaro Morata had opened the scoring, before Carlos Tevez scored to give Juventus a lead.
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