The fractions \(\frac{1}{3}, \frac{4}{7}, \frac{2}{5}\) written in ascending order are:
1. \( \frac{2}{5}, \frac{4}{7}, \frac{1}{3}\)
2. \(\frac{1}{3}, \frac{2}{5}, \frac{4}{7}\)
3. All the fractions are equivalent fractions.
4. \(\frac{4}{7}, \frac{1}{3}, \frac{2}{5}\)